Why do people keep missing the commas?
Because it's literally only the US, UK and a few smaller provinces (and possibly australia as far as I'm aware that use commas for as spacing between long numbers. The rest of the world uses periods, spaces or apostrophe's. Here in Sweden, and most of the world, a comma actually is the decimal spacer (which I believe you use a period for).
Pi is therefore 3,14 and not 3.14 for me.
23,872
I already knew the apostrophe and period thing. Personally, using a comma for a decimal spacer makes no sense to me, not in the "my way is better 'cause I'm used it it" way. But because I read it like how it's used in a regular sentence. The comma is the "breath" mark, whatever's after continues on from before, it's just notation so you know your place. It's easier to read 100,000,000,000 than 100000000000. With a period, it notes that the full number has ended and the rest after is extra. That's just my take on it.
And the space just looks like two numbers being listed.