5×80
5×80 is a basic multiplication expression in decimal arithmetic. It represents the product of the integers 5 and 80, or five times eighty. Evaluating the expression yields 400, since 5 multiplied by 80 equals 400. Because multiplication is commutative, 5×80 equals 80×5, giving the same result.
In terms of factorization, 80 equals 2^4 × 5, so 5×80 equals 2^4 × 5^2, which is
Applications of the product include area calculation and scaling. For example, a rectangle with sides 5 units