To find the number that, when multiplied by 8, equals 18, you can set up an equation.
Let's represent the unknown number as "x".
The equation would be: 8x = 18.
To solve for "x", divide both sides of the equation by 8:
x = 18/8.
Simplifying the division, x = 9/4 or x = 2.25.
Therefore, multiplying 8 by 2.25 equals 18.