3.141592653589793 * 81 = 254.469
276.4601535
6,561.
The meaning of "nine times nine is eighty one" is 9x9=81
81 times 3 = 243
80 000 000 000 or eighty billion.
Forty-seven times eighty-nine is four thousand one hundred eighty-three. In numbers, that's 47x89=4,183.
54
No, 8 times 8 is not 81.
How about: 4*20 = 80 as one example
100 * 80 = 8,000
eighty-one times one and nine times nine
Forty one times two equals eighty two.