String manipulations

Question

basically i have a status bar thats displaying strings via the number of files im process.

Ex

Files Process:  1.   HelloWorld.txt ( 1 of 5)

I want to strip out the "1." for my status bar,  how would you do that, You can't do it with the remove or replace function

the output should be like this below.  so basically im using the line in red above  for something else but without the (1 of 5)  i simply want to take away the counter thats after the ":"

Files Process: HelloWorld.txt ( 1 of 5)