Hello Teethless mama

I thankyou.

"Teethless mama" wrote:

=IF(MID(A1,2,1)="0",A1+300,A1)


"Steved" wrote:

Hello from Steved

1010 to 1310 every second digit will change from 0 to 3

1030 to 1330

I would like a formula please to replace the 2 digit only as show'n above

ie 1010 to 1310 not 1010 to 1313
Thankyou.