36MM = 36 million, in case anyone was wondering about 36 millimeters and how anyone can be owed that.
MM = 1000*1000
1. In Roman numerals M is thousand but MM is two thousand (e.g. MMXXII)
2. In scientific notation M is million (e.g. 1 MW)
The usage of MM to represent 1 million is done by people who didn't understand Roman numerals originally.
MM is a standard accounting abbreviation for “million”. See, for example https://corporatefinanceinstitute.com/resources/knowledge/ot...
Obviously, you’ve never looked at a financial statement of any sort.
K = 1000
M = 0.001
m = milli = 0.001