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

### Instruction:
James buys 5 packs of beef that are 4 pounds each.  The price of beef is $5.50 per pound.  How much did he pay?

### Response:
 เขาซื้อเนื้อวัว 5*4=<<5*4=20>>20 ปอนด์
ดังนั้นเขาจ่ายเงิน 20*5.5=$<<20*5.5=110>>110