Don't worry about them. Just keep doing your math in roman numbers. It's fine.
It bothers me that some people don't like my roman numbers. They work! Look!!
I + I = II
MMMCMXCIX - CXXIII = MMMDCCCLXXVI
There's absolutely no way of making this better through representation! Anyone who says otherwise is a bike shedder!
In fact, also don't worry about words either. Instead of serverless, let's call them catgiraffetablechaircthulhu. It doesn't matter!