Update DecimalPlaceIsNonZero

Simplify formula used to get the desired place in the input.

IntComp/common.js

@@ -25,7 +25,7 @@ function DeepClone(toClone) {
  * @returns {boolean} Whether the value in that number's place is non-zero
  */
 function DecimalPlaceIsNonZero(input, place) {
-    return !!Math.floor((input % (10 ** place)) / (10 ** (place - 1)));
+    return !!Math.floor((input / (10 ** place)) % 10);
 }
 
 module.exports = {