BEATCALC:  Beat the Calculator!

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From the BEATCALC mailing list:
a weekly service from B. Lee Clay, archived here by the Math Forum.
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   Dividing a repeating 6-digit number by 15873

  1. Select a repeating 6-digit number .
  2. The answer is 7 times the first digit of the number!

   Example:

  1. 777777 / 15873 = 7 x 7 = 49.
  2. 555555 / 15873 = 7 x 5 = 35.
  3. 999999 / 15873 = 7 x 9 = 63.

Not very demanding mental math, but good for a quick challenge or two.


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