Simple equation, so why do I feel retarded trying to implement it in code?
1/100 :: x/80 aka a/b :: c/d
100x = 80
Could be my dysleksia..
We are writing it in a linear fashion, there is a pattern (Esp if it is used the same way), we have use the braces to keep the logic, but finally we prevail.
So like I said, the pattern, if we use this format always - the answer is d/b! But it is never that easy.