Jack: Daddy, if you give me five dollars, I will give you six pennies back.
Me: 😂 well Jack, five dollars is five hundred pennies. So you want me to give you five hundred pennies and I get six back?
Jack: yeah! Will you do that?
Me: 😂 No! Why would I give you five hundred and only get six back?
Jack: ok, how about if I give you… seven pennies?