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

### Instruction:
Oranges have 80 calories and cost $1.20 each. If Timmy has $10 and needs to make sure he gets 400 calories, how much money will he have left after he buys the oranges he needs?

### Response:
He needs to buy 5 oranges because 400 / 80 = <<400/80=5>>5
These will cost $6 because 5 x 1.2 = <<5*1.2=6>>6
He will have $4 left because 10 - 6 = <<10-6=4>>4
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