Fixes #1529. Fixed: Incorrect CPDecimalNumber result for 220000/220.

And in general divisions where the quotient had fewer digits than the dividend when disregarding exponent would fail.

We want to stop dividing when we've gone over all the digits in the dividend and the remainder is 0.

Foundation/CPDecimal.j

@@ -765,7 +765,7 @@ function _SimpleDivide(result, leftOperand, rightOperand, roundingMode)
 
     n1._mantissa = [];
 
-    while ((k < leftOperand._mantissa.length) || (n1._mantissa.length
+    while ((used < leftOperand._mantissa.length) || (n1._mantissa.length
                                                     && !((n1._mantissa.length == 1) && (n1._mantissa[0] == 0))))
     {
         while (CPOrderedAscending == CPDecimalCompare(n1, rightOperand))