Try putting the mixed numbers into improper fractions.
Then do copy-dot-flip if you know what that is. It’s basically just copying down the first fraction and multiplying it by the second fraction. But the second fractions numerator and denominator has to be flipped for it to work.
86/4 = 21.5 *5 Or more, raise the score* (rounds to 22) you should have 2 lightbulbs left over but you would be 2 lightbulbs short if you were to get 21 packages as opposed to 22
