What is 9x9x9?

The product of 9 multiplied by itself three times (9x9x9) is equal to 729. This can be calculated by multiplying 9 by 9, which equals 81, and then multiplying the result by 9 again, resulting in 729. This can also be written as 9^3, where the exponent indicates the number of times the base (9) is multiplied by itself.