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Known: a = 19911991991 1991, Q: what is the remainder of a divided by 13?
1991199119911991 △ 13 = 15316916307, there are 1991 in the original number a, because 1991 △ 3 = 663 2, so the remainder of the original number a divided by 13 is also 2 8, so the remainder of a divided by 13 is 8. A: the remainder is 8
Simple operation: 1.02 divided by 1.25
1.02/1.25=1.02*8/1.25*8
=8.16/10=0.816
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