It's so easy to stick to international units, folks. Please. PLEASE!
The M lives on in languages like Spanish where the word mil means one thousand.
Based on that, I can say `1.000.000` is equal to MM because Brazil uses `.` to separate groups of 3 digits, and `,` to separate integer and decimal parts.
My point is to stick to using the units the language you're writing on uses.
Btw, thanks for explaining the origin of MM! I definitely didn't know that.