Commas in large numbers.

Hmmm... I am at an impasse, because a thread about this already exists, however it's really old, so if I posted on it It would be necro.

After reading through the rules I am sure this is the 'correct' way of doing this.

So, the problem; space is a large place, full of large things. Large things means large numbers. Large numbers without some sort of divider are near unreadable. Now then, I am aware that in many European nations (sans the United Kingdom) it is customary to divide numbers as...

Commas in large numbers.