Syntax: @PRODUCT(argumentlist)
argumentlist = any combination of numbers, cells, or ranges
@PRODUCT multiplies all the numeric elements of the argument list together, ignoring empty and non-numeric values, and returns the product.
Examples:
@PRODUCT(6, 5, 8, 2) = 480
@PRODUCT(A1..A3) = 25.1327, where A1..A3 = 2, @PI, 4