In accounting, M has long been used as 'thousand'. Therefore, MM was used for million, as it's a thousand thousand. This is something that I didn't think woul

In accounting, M has long been used as 'thousand'. Therefore, MM was used for million, as it's a thousand thousand. This is something that I didn't think would be this contentious. It's an old standard. https://english.stackexchange.com/questions/181917/mixing-use-of-k-for-thousands-and-mm-for-millions https://english.stackexchange.com/questions/181917/mixing-us...