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

### Instruction:
Tom decides to buy some shirts from his favorite fandoms because there is a sale on his favorite website.  He buys 5 t-shirts from each of his 4 favorite fandoms.  The shirts normally cost $15 each but there is a 20% off sale.   The order qualified for free shipping but he still needed to pay 10% tax.  How much did he pay?

### Response:
 เขาซื้อเสื้อยืดทั้งหมด 5*4=<<5*4=20>>20 ตัว
ส่วนลดราคาของเสื้อคือ $15 * 0.2 = $<<15*0.2=3>>3
ดังนั้นราคาแต่ละเสื้อคือ $15 - $3 = $<<15-3=12>>12
ดังนั้นราคารวมทั้งหมดคือ $12*20=$<<12*20=240>>240
ภาษีเพิ่มขึ้นคือ $240 * 0.1 = $<<240*0.1=24>>24
ดังนั้นราคารวมทั้งหมดคือ $240 + $24 = $<<240+24=264>>264