Place value is very important.

In the number 1234567 .....

the 7 represents seven units or 7

the 6 represents sixty or 60

the 5 represents five hundred or 500

the 4 represents four thousand or 4000

the 3 represents thirty thousand or 30000

the 2 represents two hundred thousand or 200000

the 1 represents one million of 1000000

We used to use commas to write the number as 1, 234, 567

Nowadays it is more common to use small spaces 1 234 567