This somewhat misses the point of my comment, tough. The post was written in English, so one should stick to how English represents millions.

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.

mm as an abbreviation is still the standard in finance, so still very relevant in English

engineers tend to interpret it as

   million * million = terra
   10^6 * 10^6 = 10^12

because the suffix m or M is associated with million or 10^6 in the international system of units.