How to know the repeating decimal in a fraction?

Question

I already know when a fraction is repeating decimals. Here is the function.

public bool IsRepeatingDecimal
{
    get
    {
        if (Numerator % Denominato         


        

Answer 1

One way would be to repeat the way that you do long division by hand, and keep note of the remainder at each stage. When the remainder repeats, the rest of the process must repeat as well. E.g. the digits of 1.0/7 are 0.1 remainder 3 then 0.14 remainder 2 then 0.142 remainder 6 then 0.1428 remainder 4 then 0.14285 remainder 5 then 0.142857 remainder 1 which is the 1 that starts it off again amd so you get 0.1428571 remainder 3 and it repeats again from there.