Delete first character in notepad++?

Question

Notepad++

There are 400 lines of numeric data (11 digit numbers), ONLY the first character in all 400 lines needs to be removed.
What expression does it?
Googling did not bear fruit, all expressions are the same (on different sites) and do not perform what is needed at all.

Answer 1

Ctrl-H
Find: ^.?(.*)
Replace: \1
Regular expressions
(and new expressions - remove if necessary)

Answer 2

Find: ^.?(.*)
Replace: 7\1 // in this case, the first character will be changed to 7