Sam Klein,
Can you or anyone else explain why when adding the numbers the day numbers are kept together (28 & 24) but when adding the year you separate the numbers (19+39 instead of 1939, 20+22 instead of 2022)? & why split where you did? Perhaps it should be 1+9+3+9?
When you’re allowed to play fast & loose with numbers you can come up with anything.
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