Division carries over leading 0 in dividend.

[Xavienth]

In the middle of a calculation, if the local dividend and divisor evenly divide with no remainder, in the next iteration of the loop, the divisor will start as 0, and when the next digit is added on (say 6), it will be 06.

[Xavienth]

This is easily fixed with just a check at the start of the loop if the first digit of the dividend is a 0, then set it to the digit.