Plain old everyday math--wow, you did type that on your computer-- which of course is digital-- but uses hex as short hand, and but might act as if the world was in base 64-- but uses ascii for the keyboard-- which can be expressed in octal?

So plain old every day math-- which base is that? just because you have a bias towards base 10...

And don't think this is a new fangled computer thing-- the egyptian pyramids were build using binary for the really big numbers and calculations! (the weird stuff i know! )