99! = 99 x 98 x 97 x ... x 2 x 1
99! ≈ 9.33262154 x 10^155
999! = 999 x 998 x 997 x ... x 2 x 1
999! ≈ 2.982720665 x 10^2567
99! = 99 x 98 x 97 x ... x 2 x 1
99! ≈ 9.33262154 x 10^155
999! = 999 x 998 x 997 x ... x 2 x 1
999! ≈ 2.982720665 x 10^2567