Originally Posted by BobC
Thanks, the searching isn't difficult - it's the arithmetic transformation that I haven't been able to work out.
AFAIK, you cannot do arithmetic transformations with regular expressions at all (other than adding or removing one or more numerals from an existing number). You'd need a scripting language for it.
If you posted a code snippet of a paragraph with a footnote reference, the actual footnote code and the desired transformation, the regex gurus might come up with a solution.