Hi!
Divide each part of the number by 8.
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no.
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Yes! 8 times.
8 * 8 = 64
71 - 64 = 7
Carry the seven to the 2...
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Yes! 9 times.
8 * 9 = 72
72 - 72 = 0
The answer is 89
Hope this helps! :)
-Peredhel