I have two series of numbers in the format `B1234`

and `B12345`

. When I sort in ascending order, I get all the numbers starting with `B12345`

and then all of those from `B1234`

on.

To counteract this problem, I inserted zero in between `B1234`

to get `B01234`

. When the numbers are converted to this format, I am able to get the desired result.

Can you help me inserting zeros?