[AccessD] Parsing Strings

I know this is very easy, but I can never remember exactly how to do this.  I need to parse off some data from the end of a string.  For example, the string:

FLDR T TAB M CLIP#5 BLUE 11PT; 2 PLY STRAIGHT CUT 250/CS

I want to parse out "250/CS".  How do I set up the code to do this?  This info is always going to be at the end of the string.  

Thanks for your help.  If there is a website or information that I can put in my files as to how to work with strings, I could reference that in the future.
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