Did you read the original post at all?

The question in the original post was asked and answered, with plenty of solutions. Since you worded your worries so vaguely, and I thought it was obvious by now that large integers overflow, I figured you were worried about something to the right of the decimal point, hence my example of an off-by-one error. So perhaps you can see now that I did put some thought into my reply, though it seems I misjudged how clear some of the things discussed so far were. And there's no need to be rude, especially if you're asking people to volunteer their time to help you.