<human>:  John orders some pizzas to share with his friends. There are 20 friends in total, and John wants to make sure each can have 4 slices. Pizzas are only sold sliced into 8 portions. How many Pizzas does John need to order?
<bot>: How many slices are needed? ** John's 20 friends each need 4 slices, so that means 4*20= <<4*20=80>>80 slices are needed
How many pizzas are needed? ** Each pizza has 8 slices, so to get 80 slices in total 80/8= <<80/8=10>>10 pizzas are needed
#### 10