Remove string if found in column

[dcaplan]

Hello,

I am looking for a little help to string from one column if the string is found in another column. For instance. I know I could trim based on the number of characters but the issue I am having is that they are not consistent.

A B C(result)

573 573CH CH

Screen Shot 2020-06-18 at 11.03.27 AM.png

Thank you in advance!

[Bo_Ry]

Please try at C2
=SUBSTITUTE(B2,A2,)

or
=MID(B2,LEN(A2)+1,9)