bug

application/common/model/GoodsInstall.php

@@ -19,7 +19,7 @@ class GoodsInstall extends Model
     public function getFee($num){
         foreach ($this['fee'] as $fee){
             if($num>=$fee['num_min'] && $num<$fee['num_max']){
-                return $fee['amount'];
+                return bcmul($fee['amount'],$num);
             }
        }
         return 0;