Returns the factorial of the given number.

**Sample Usage**

FACT(5)

FACT(C5)

**Syntax**

FACT(number)

- number - The number for which the factorial is to be computed.

**Examples**

FACT(5) returns the number 120.

FACT(C5) returns the factorial of the number contained in C5.

**Notes**

- Decimal inputs will be truncated.