The result of 7233629131 / 137438953472 is 18.999999997649866. This is wrong, the divisor and dividend are the wrong way around. ..and in case anyone else is

The result of 7233629131 / 137438953472 is 18.999999997649866. This is wrong, the divisor and dividend are the wrong way around. ..and in case anyone else is wondering how those numbers relate to the constant in the code, it's 2^37 / (2938661835 + 2^32)