diff --git a/app/Console/Commands/CostCommand.php b/app/Console/Commands/CostCommand.php
index 99a9db5..9845050 100644
--- a/app/Console/Commands/CostCommand.php
+++ b/app/Console/Commands/CostCommand.php
@@ -2,9 +2,12 @@
 
 namespace App\Console\Commands;
 
-use DB;
+use Throwable;
+use Carbon\Carbon;
 use App\Models\Business;
 use Illuminate\Console\Command;
+use Morilog\Jalali\CalendarUtils;
+use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Cache;
 
 class CostCommand extends Command
@@ -28,109 +31,143 @@ class CostCommand extends Command
 
     public function handle()
     {
-        // infinte loop
         while (true) {
-            // to baghali ha
-            $recorded_month = jdate($business->calculated_at)->format("Y-m-01");
-
-            $calculated_at = Cache::get('calculated_at');
-            if ($calculated_at === null) {
-                $business = Business::orderBy('calculated_at')->first()->load('users', 'cost');
-                $calculated_at = $business->calculated_at;
-                $until_now = jdate()->getMonth() > jdate($business->calculated_at)->getMonth()
-                    ? jdate($business->calculated_at)->toCarbon()->setTime("00", "00", "00")
-                    : \Carbon\Carbon::now();
-
-                Cache::put('calculated_at', $until_now, 60);
+            $business = Business::find(221);
+            if ($business === null) {
+                continue;
+            }
+
+            $year = jdate()->getYear();
+            $month = jdate()->getMonth();
+            $day = jdate()->getDay();
+            $hour = jdate()->getHour();
+            $minute = jdate()->getMinute();
+            $second = jdate()->getSecond();
+
+            if (jdate()->getYear() > jdate($business->calculated_at)->getYear()) {
+                $year = jdate()->getYear();
+                $month = 1;
+                $day = 1;
             }
 
+            if (
+                jdate()->getYear() > jdate($business->calculated_at)->getYear()
+                &&
+                jdate()->getMonth() > jdate($business->calculated_at)->getMonth()
+            ) {
+                $year = jdate()->getYear();
+                $month = jdate()->getMonth();
+                $day = 1;
+            }
+
+            $gDate = CalendarUtils::toGregorian($year, $month, $day);
+            $carbon = Carbon::createFromDate($gDate[0], $gDate[1], $gDate[2]);
+            $carbon->setTime($hour, $minute, $second);
+
+            $now = $carbon;
+
             // if calculated_at less than an hour stop
-            if (\Carbon\Carbon::now()->diffInMinutes($until_now) <= 60) {
-                $this->info('nothing to cost');
+            if ($now->diffInMinutes($business->calculated_at)) {
+                $this->info('Must be one hour after the last audit.');
                 continue;
             }
 
             try {
                 DB::beginTransaction();
+                // Fixed amounts of expenses
+                $business->load('users', 'cost');
 
-                // business order by last_calculated_at take first
-                if (!isset($business)) {
-                    $business = Business::orderBy('calculated_at')->first()->load('users', 'cost');
-                }
-
-                $user_fee = enum('business.fee.user');
-
-                // get business  employee
-                $users_cost = $business->cost
-                    ->where('type', '=', 'users')
-                    ->where('fee', '=', $user_fee)
-                    ->where('month', '=', $recorded_month)
-                    ->where('amount', '=', $business->users->count())
-                    ->first();
-
-                if ($users_cost === null) {
-                    $business->cost()->create([
-                        'type' => 'users',
-                        'month' => $recorded_month,
-                        'amount' => $business->users->count(),
-                        'fee' => $user_fee,
-                        'duration' => $duration =  $until_now->diffInSeconds($calculated_at), // from the created_at time of the newset fifth user
-                        'additional' => $business->users->pluck('id')->toArray(),
-                    ]);
-                } else {
-                    $users_cost->update([
-                        'duration' => $duration = $until_now->diffInMinutes($calculated_at), // last calc - (current month - now else last calc - end of the past month),
-                        'additional' => $business->users->pluck('id')->toArray(),
-                    ]);
-                }
-
-                $costs = $user_fee * $duration;
-
-                // do the math in php
-                if (intdiv($business->files_volume, 200) === 0) {
-                    $pads = 0;
-                } else {
-                    $pads = intdiv($business->files_volume, 200) - 1;
-                }
-
-                $file_fee = enum('business.fee.file');
-
-                $files = $business->cost
-                    ->where('type', '=', 'files')
-                    ->where('fee', '=', $file_fee)
-                    ->where('month', '=', $recorded_month)
-                    ->where('amount', '=', $business->files_volume)
-                    ->first();
-
-                if ($files === null) {
-                    $business->cost()->create([
-                        'type' => 'files',
-                        'month' => $recorded_month,
-                        'amount' => $pads,
-                        'fee' => $file_fee,
-                        'duration' => $duration = $until_now->diffInMinutes($calculated_at), // how to determine the file?,
-                    ]);
-                } else {
-                    $files->update([
-                        'duration' => $duration = $until_now->diffInMinutes($calculated_at), // last calc - (current month - now else last calc - end of the past month),,
-                    ]);
-                }
-
-                $costs += $file_fee * $duration;
+                $costs = 0;
+                $costs += $this->calculateCostOfBusinessUsers($business, $now);
+                $costs += $this->calculateCostOfBusinessFiles($business, $now);
 
                 // increment and decrement of wallet in php
                 // deduct costs from your business wallet
                 // make sure save the calculated_at
                 $business->update([
                     'wallet' => $business->wallet - $costs,
-                    'calculated_at' => \Carbon\Carbon::now(),
+                    'calculated_at' => Carbon::now(),
                 ]);
+
                 DB::commit();
-            } catch (Throwable $thr) {
+            } catch (Throwable $throwable) {
                 DB::rollback();
-                throw $thr;
+                report($throwable);
                 continue;
             }
         }
     }
+
+    public function calculateCostOfBusinessUsers($business, $until_now)
+    {
+        $user_fee = enum('business.fee.user');
+        $calculated_at = $business->calculated_at;
+        $recorded_month = jdate($business->calculated_at)->format("Y-m-01");
+
+
+        // get business employee
+        $users_cost = $business->cost
+            ->where('type', '=', 'users')
+            ->where('fee', '=', $user_fee)
+            ->where('month', '=', $recorded_month)
+            ->where('amount', '=', $business->users->count())
+            ->first();
+
+        if ($users_cost === null) {
+            $business->cost()->create([
+                'type' => 'users',
+                'month' => $recorded_month,
+                'amount' => $business->users->count(),
+                'fee' => $user_fee,
+                'duration' => $duration =  $until_now->diffInSeconds($calculated_at), // from the created_at time of the newset fifth user
+                'additional' => $business->users->pluck('id')->toArray(),
+            ]);
+        } else {
+            $users_cost->update([
+                'duration' => $duration = $until_now->diffInMinutes($calculated_at) + $users_cost->duration, // last calc - (current month - now else last calc - end of the past month),
+                'additional' => $business->users->pluck('id')->toArray(),
+            ]);
+        }
+
+        return $user_fee * $duration;
+    }
+
+    public function calculateCostOfBusinessFiles($business, $until_now)
+    {
+        $file_fee = enum('business.fee.file');
+        $calculated_at = $business->calculated_at;
+        $recorded_month = jdate($business->calculated_at)->format("Y-m-01");
+
+
+        // do the math in php
+        if (intdiv($business->files_volume, 200) === 0) {
+            $pads = 0;
+        } else {
+            $pads = intdiv($business->files_volume, 200) - 1;
+        }
+
+
+        $files = $business->cost
+            ->where('type', '=', 'files')
+            ->where('fee', '=', $file_fee)
+            ->where('month', '=', $recorded_month)
+            ->where('amount', '=', $business->files_volume)
+            ->first();
+
+        if ($files === null) {
+            $business->cost()->create([
+                'type' => 'files',
+                'month' => $recorded_month,
+                'amount' => $pads,
+                'fee' => $file_fee,
+                'duration' => $duration = $until_now->diffInMinutes($calculated_at), // how to determine the file?,
+            ]);
+        } else {
+            $files->update([
+                'duration' => $duration = $until_now->diffInMinutes($calculated_at) + $files->duration, // last calc - (current month - now else last calc - end of the past month),,
+            ]);
+        }
+
+        return $file_fee * $duration;
+    }
 }
diff --git a/config/app.php b/config/app.php
index 7f44ebe..d517cdc 100644
--- a/config/app.php
+++ b/config/app.php
@@ -12,7 +12,7 @@ return [
 
     'asset_url' => env('ASSET_URL', null),
 
-    'timezone' => 'UTC',
+    'timezone' => 'Asia/Tehran',
 
     'locale' => 'fa',
 
diff --git a/database/factories/BusinessFactory.php b/database/factories/BusinessFactory.php
index f8dab3d..28f0dae 100644
--- a/database/factories/BusinessFactory.php
+++ b/database/factories/BusinessFactory.php
@@ -12,6 +12,6 @@ $factory->define(Business::class, function (Faker $faker) {
         'slug' => Str::slug($name) . $faker->numberBetween(1, 100),
         'wallet' => random_int(111111, 999999),
         'color' => $faker->colorName,
-        'calculated_at' => \Carbon\Carbon::now()->subMinutes(random_int(1, 1000)),
+        'calculated_at' => \Carbon\Carbon::now()->subDays(random_int(1, 31)),
     ];
 });
diff --git a/database/migrations/2020_08_18_085018_create_businesses_table.php b/database/migrations/2020_08_18_085018_create_businesses_table.php
index e37d713..b0d168f 100644
--- a/database/migrations/2020_08_18_085018_create_businesses_table.php
+++ b/database/migrations/2020_08_18_085018_create_businesses_table.php
@@ -23,7 +23,7 @@ class CreateBusinessesTable extends Migration
             $table->string('description')->nullable();
             $table->json('cache')->nullable();
             $table->boolean('has_avatar')->default(false);
-            $table->timestamp('calculated_at')->nullable();
+            $table->timestamp('calculated_at')->nullable()->index();
             $table->timestamp('created_at')->nullable();
             $table->timestamp('updated_at')->nullable();
             $table->timestamp('deleted_at')->nullable();