Finding the quintuple of 18

To find the quintuple of a number, you multiply the original number by 5. Here, 18 stands for the number you are working with. Multiplying 18 by 5 gives you a new value that is five times the original. This process takes 18 and increases it exactly fivefold. The resulting value, represented by 90, is the quintuple of 18. Understanding this multiplication step makes it clear how to find the quintuple of any number by simply multiplying it by 5.