So basically there is 32 ounces in quart. This means in order to get the solution you have to times 5 by 32 to convert the quarts into ounces. Then you need to divide the amount of quarts in the bottle by 8. You do this because one glass hold 8 ounces and you are trying to figure out how many glasses you need to get rid of all the juice. Hope this helps and you get it right!!! Good luck!!! :)