The OP does not make it clear, but it superficially appears that the element of interest in the filename appears only to be a sequence of digits surrounded by whitespace:

/[A-Za-z0-9]+.*\b([0-9]+)\b/

Should be easy enough to rename them, but it might be advisable to accumulate a hash-list of the renames that need to be made first, then to perform all renames separately. (The regex above thus excludes names that consist only of digits.)

In reply to Re: Removing characters in a file name by Anonymous Monk
in thread Removing characters in a file name by andy2020

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