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