Many Facts!

What is the value of the following sum:

\[ 1! + 2! + 3! + 4! + 5! ? \]

Details and assumptions

The number \( n!\), read as n factorial, is equal to the product of all positive integers less than or equal to \(n\). For example, \( 7! = 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1\).

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