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

### Instruction:
Jan buys 5 dozen roses.  Each rose cost $6.  Since he bought so many he only needs to pay 80%.  How much did he pay?

### Response:
 เขาได้รับดอกกุหลาบจำนวน 5*12=<<5*12=60>>60 ดอก
ที่มีราคา 6*60=$<<6*60=360>>360
ดังนั้นเขาต้องจ่าย 360*.8=$<<360*.8=288>>288