18 must be multiplied by ( + 3) to get 42 + 12
In mathematics, multiplication/multiple means adding groups of equal size. Multiplication increases the number of things in the group. Two factors and products are part of the multiplication problem. In the multiplication problem 6 × 9 = 54, 6 and 9 are divisors and 54 is the product.
Multiplication is defined as computing the result of repeatedly adding two numbers. An example of multiplication is 4 times 2 equals 8. Arithmetic with positive integers is adding a number (the multiplicand) to itself a specified number of times.
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