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

### Instruction:
John buys 20 candy bars.  His brother Dave pays for 6 of them.  If each candy bar costs $1.50, how much did John pay?

### Response:
He paid for 20-6=<<20-6=14>>14 candy bars
So he paid 14*1.5=$<<14*1.5=21>>21
#### 21