How to read part of the variable value?

Hello, friends. I have asp code, and the variable called name
and it is the name of the image in the format of “small_59493.jpg”.

But I only need 59493.jpg. How should I write the code so that

I can have e.g.
if
name=small_59493.jpg

how to make this new name then?
newname=59493.jpg

Many thanks in advance!