Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Luigi bought four pizzas for $80.  Each pizza was cut into 5 pieces.  How much did each piece of pizza cost, in dollars?

### Response:
He got 4 pizzas for $80 so that's 80/4 = $<<80/4=20>>20 per pizza
Each pizza was cut into 5 pieces so each piece was worth 20/5 = $4
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