Truly. But at first sight I couldn't parse the comma as anything else except a delimiter :(

Check out what they do in India[a]. It's not beyond the realm of possibility to misremember it exactly.

a: https://en.wikipedia.org/wiki/Thousands_separator#Examples_o...

Yes, in India we use 3 places for the first and then 2 places for the rest. But comma was never a thing. Fun fact: In India we use upto Crore as mentioned in the link, but recently had to learn upto Lakh Crore as the politicians looted bigger recently and went beyond normal. :)