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

### Instruction:
James decides to replace his car.  He sold his $20,000 car for 80% of its value and then was able to haggle to buy a $30,000 sticker price car for 90% of its value.  How much was he out of pocket?

### Response:
 รถเก่าของเขาขายได้ราคา 20000 * 0.8 = $<<20000*.8=16000>>16,000
เขาซื้อรถใหม่ในราคา 30000 * 0.9 = $<<30000*.9=27000>>27,000
นั่นหมายความว่าเขาต้องจ่ายเงินเอง 27,000 - 16,000 = $<<27000-16000=11000>>11,000