You first look at the number that is before the !(factorial sign). Then you times all positive integers (which means it doesn't include 0), including the number itself. The answer is the factorial of the original number beside the ! sign. EX.:4!=1x2x3x4=24
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The value of 9 factorial plus 6 factorial is 363,600
27 factorial = 10,888,869,450,418,352,160,768,000,000
1 factorial = 1
Factorial 65 = 8247650592082470666723170306785496252186258551345437492922123134388955774976000000000000000
34 factorial = 295,232,799,039,604,140,847,618,609,643,520,000,000.