Convert Whole numbers to Hex

[latch]

It is possible to do this with some kind of library, but I wanted too challenge myself to learn how to convert Decimal to Hex in my mind.
It's rather simple tbh, I'll explain if somebody asks.

I'm impressed that you even care about hex.

I only code once or twice a month(my environment is not conducive to concentration) and read hex about that often. Even programmers don't use hex much anymore as far as I know. High level languages don't get that close to the machine.