diff --git a/app/Services/LinkosDeviceLogService.php b/app/Services/LinkosDeviceLogService.php
index f0459b0..7e8a51a 100644
--- a/app/Services/LinkosDeviceLogService.php
+++ b/app/Services/LinkosDeviceLogService.php
@@ -196,7 +196,7 @@ class LinkosDeviceLogService
         ]);
 
         foreach ($data as $key => $item) {
-            $dailyLog->{$key} = round(bcmul($item['sum'], $item['count'], 2), 2);
+            $dailyLog->{$key} = round(bcdiv($item['sum'], $item['count'], 2), 2);
         }
 
         $dailyLog->save();
@@ -329,7 +329,7 @@ class LinkosDeviceLogService
                     break;
 
                 default:
-                    $dailyLog->{$key} = round(bcmul($item['sum'], $item['count'], 2), 2);
+                    $dailyLog->{$key} = round(bcdiv($item['sum'], $item['count'], 2), 2);
                     break;
             }
         }
@@ -412,7 +412,7 @@ class LinkosDeviceLogService
         ]);
 
         foreach ($data as $key => $item) {
-            $dailyLog->{$key} = round(bcmul($item['sum'], $item['count'], 2), 2);
+            $dailyLog->{$key} = round(bcdiv($item['sum'], $item['count'], 2), 2);
         }
 
         $dailyLog->save();