diff --git a/Util/ItemUtil.cs b/Util/ItemUtil.cs
index 9626b36..256d660 100644
--- a/Util/ItemUtil.cs
+++ b/Util/ItemUtil.cs
@@ -100,8 +100,8 @@ public static int CalculateRatiodAmount(int numerator, int denominator, int amou
                 return amount;
             }
 
-            var ratio = (double)numerator / denominator;
-            return (int)(ratio * amount);
+            // Use integral division here to avoid floating point issues.
+            return numerator * amount / denominator;
         }
     }
-}
\ No newline at end of file
+}