Aye, the forum has been crashing on me all day, it's hard to keep up.
I noticed that you posted one reply twice, did you get a warning about "Navigating away from the page" when you first tried to post?
This workbook has your formula corrected for the record, and a possible minimum age (5) for holding an ID card solution.
I realise that this doesn't give the result that the OP asks for but it covers an age group from 5 to 104.
Just a thought.
[EDIT]
This post crashed, but sent the text without the attachment ...![]()
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