diff --git a/src/main/java/xanadu/enderdragon/tools/MyMath.java b/src/main/java/xanadu/enderdragon/tools/MyMath.java
deleted file mode 100644
index 67cac05..0000000
--- a/src/main/java/xanadu/enderdragon/tools/MyMath.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package xanadu.enderdragon.tools;
-
-import java.math.BigDecimal;
-import java.math.RoundingMode;
-
-public class MyMath {
-    public static double div(double d1,double d2,int len){
-        BigDecimal b1 = new BigDecimal(d1);
-        BigDecimal b2 = new BigDecimal(d2);
-        return b1.divide(b2,len, RoundingMode.HALF_UP).doubleValue();
-    }
-}