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

### Instruction:
John goes to the store and pays with a 20 dollar bill.  He buys 3 sodas and gets $14 in change.  How much did each soda cost?

### Response:
 เขาจ่ายเงิน 20-14= $<<20-14=6>>6
ดังนั้นราคาของแต่ละขวดโซดาคือ 6/3= $<<6/3=2>>2