How to find what number a value is closest to? (You'll get it when I explain)

Basically, let's say the number was 67.

I want to find out how to get this number to become a multiple of 10.

Therefor, 67 would become 70 because it is closest to 70.

This is just an example, I really want it so that the number is always a multiple of 4.

Round(number/4)*4

% finds the remainder so if the result you test is 0 then the number can be a multiple of 4. Then if you want to round up you can test regex if str(x%4) not equal to 0 then x+1 and repeat until remainder is 0.

I should mention I'm no math expert so the logic may be off but "%" is one of the tools you are looking for.

Round(number/4)*4

Posted before I saw dop2000, he defiantly got it down nice and easy.