You get this answer because dividing is the opposite of multiplying (it can undo the multiplication. 120 / 24 = 5. To check, you can multiply 24 and 5, which does in fact equal 120. Another way is by setting up an algebraic equation. Let's make the multiplier = x. 24 x X = 120. 24x = 120. Solve for x by dividing both sides by 24. You are left with x = 5.
