Changes

==Examples==

==Examples==

#FACTORIAL(9) = 362880

#FACTORIAL(9) = 362880

#FACTORIAL(4.3) = 24

#FACTORIAL(4.3) = 38.0779764499523

#FACTORIAL(54) = 2.308436973392414e+71

#FACTORIAL(54) = 2.308436973392414e+71

#FACTORIAL(-3) = Infinity

#FACTORIAL(-3) = Infinity