sas - Ignore part of sentence with regex -

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what i'm trying ignore parts of sentence regex. i'm working getting last value of sentence:

gleason score 3+4=7

what's important part of bigger picture, regex gets part of sentence, why i'm looking value 7.

per i've got regex mark whole sentence: 

gleason score\s+\d.\d.\d

is there whay can latest value?

thanks.

you use pattern 

[^=]+$

explanation:

[^=]            # character not in [=] class +               # (one or more)(greedy) $               # end of string/line

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