Multiplies the base value by 1 + the sum of all the modifier amounts.
For example, with a base of 3 and 2 modifiers with values 2 and 4 respectively, the total would be 21, because 3 * (1 + 2 + 4) = 21.
Applies this operation to the given base value, modifying it with the given modifiers, and returns the result.