Well, isn't that just a happy little math problem! If you take a moment to think about it, you'll see that 20 times 4 equals 80. You're doing great, just keep those numbers dancing on the canvas of your mind!
Well, if we're going to play the math game, 4 times what equals 80? That would be 20, my dear. So, 4 times 20 equals 80. Math can be a real hoot, can't it?