diff --git a/src/kiss/Macros.hx b/src/kiss/Macros.hx
index 3d35dc5..b5d42aa 100644
--- a/src/kiss/Macros.hx
+++ b/src/kiss/Macros.hx
@@ -21,12 +21,22 @@ class Macros {
 
         macros["%"] = (wholeExp:ReaderExp, exps:Array<ReaderExp>, k) -> {
             wholeExp.checkNumArgs(2, 2, '(% [divisor] [dividend])');
-            CallExp(Symbol("Prelude.mod").withPosOf(wholeExp), [exps[1], exps[0]]).withPosOf(wholeExp);
+            CallExp(Symbol("kiss.Operand.toDynamic").withPosOf(wholeExp), [
+                CallExp(Symbol("Prelude.mod").withPosOf(wholeExp), [
+                    CallExp(Symbol("kiss.Operand.fromDynamic").withPosOf(wholeExp), [exps[1]]).withPosOf(wholeExp),
+                    CallExp(Symbol("kiss.Operand.fromDynamic").withPosOf(wholeExp), [exps[0]]).withPosOf(wholeExp)
+                ]).withPosOf(wholeExp)
+            ]).withPosOf(wholeExp);
         };
 
         macros["^"] = (wholeExp:ReaderExp, exps:Array<ReaderExp>, k) -> {
             wholeExp.checkNumArgs(2, 2, '(^ [base] [exponent])');
-            CallExp(Symbol("Prelude.pow").withPosOf(wholeExp), [exps[1], exps[0]]).withPosOf(wholeExp);
+            CallExp(Symbol("kiss.Operand.toDynamic").withPosOf(wholeExp), [
+                CallExp(Symbol("Prelude.pow").withPosOf(wholeExp), [
+                    CallExp(Symbol("kiss.Operand.fromDynamic").withPosOf(wholeExp), [exps[1]]).withPosOf(wholeExp),
+                    CallExp(Symbol("kiss.Operand.fromDynamic").withPosOf(wholeExp), [exps[0]]).withPosOf(wholeExp)
+                ]).withPosOf(wholeExp)
+            ]).withPosOf(wholeExp);
         };
 
         macros["+"] = variadicMacro("Prelude.add");
diff --git a/src/kiss/Prelude.hx b/src/kiss/Prelude.hx
index 519bb75..8f5a4a8 100644
--- a/src/kiss/Prelude.hx
+++ b/src/kiss/Prelude.hx
@@ -80,12 +80,12 @@ class Prelude {
 
     public static var divide = variadic(_divide);
 
-    public static function mod(bottom:Float, top:Float):Float {
-        return top % bottom;
+    public static function mod(bottom:Operand, top:Operand):Operand {
+        return Right(top.toFloat() % bottom.toFloat());
     }
 
-    public static function pow(exponent:Float, base:Float):Float {
-        return Math.pow(base, exponent);
+    public static function pow(exponent:Operand, base:Operand):Operand {
+        return Right(Math.pow(base.toFloat(), exponent.toFloat()));
     }
 
     static function _min(a:Operand, b:Operand):Operand {