VSCode regex find & replace submatch math?

Question

%s@{fileID: \\(213[0-9]*\\)@\\=\'{fileID: \'.(submatch(1)-1900)@

I am using this regex search and replace command in vim to subtract a constant fro

Answer 1

To augment Benjamin's answer with an example:

Find        Carrots(With)Dip(Are)Yummy
Replace     Bananas$1Mustard$2Gross
Result      BananasWithMustardAreGross

Anything in the parentheses can be a regular expression.