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

### Instruction:
Barry goes to a shop to buy a shirt he'd been admiring for quite some time. He tells the attendant that it's his birthday so she decides to give him a 15% special discount. The price tag on the shirt says $80. How much is he supposed to pay now, considering the special discount?

### Response:
 15% ของ $80 = (15/100)*$80 = $<<(15/100)*80=12>>12
จำนวนเงินส่วนลดคือ $12 ดังนั้นเขาควรจะจ่ายเพียงแค่ $80-$12 = $68