We ordered 7 pizzas for the 5th grade. Mrs. LeFrancois' class ate 2 1/2 pizzas, Mrs. Ticehurst's class ate 1 1/3 pizzas, and Mrs. Jennison's class ate 2 2/3 pizzas. How much pizza will be left for the other 3 classes?
Answer: The other three classes will have ____ pizza/s to share.