Hi all, I have some text string's where i want to keep only the numbers and special characters. Not all the strings have letters but some do.

An example is below

5/1
26/5
69/10
21/10F

I would want these to show as

5/1
26/5
69/10
21/10 (so the F is removed).

The letter (if there is one) will always be the last charterer if that helps?