Curious Calculation: 3 Digit Num Divided by Sum of Digits (Proof Included)

This video show a calculation starting with a 3 digit number with all the same digit divided by the sum of the digits is always the same result.

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Curious Calculation: Result is Always 8 (Proof Included)

This video show a calculation starting with any counting number that always results in 8. A proof is included.