John buys 1/2 gallon jugs of cold brew coffee every 4 days.  How many cups of coffee does he drink a day?
He drinks 128/2 = <T>divide(128, 2)=64.0 ounces of coffee every 4 days
That means he drinks 64/4 = <T>divide(64, 4)=16.0 ounces of coffee a day
So he drinks 16/8 = <T>divide(16, 8)=2.0 cups a day
