|Commas are used with large numbers to separate the thousands (i.e., every 3 decimal places).|
Commas with NumbersCommas can be used to make reading numbers a little easier. They are placed every 3 decimal places for numbers comprising 4 digits or more.
Serial number 1654880 was destroyed in 1984.
(not in reference numbers or years)
REVERSE IN EUROPE
In Europe, the use of commas and full stops in numbers is reversed.
4,567.1 (British / US version)
4.567,1 (European version)