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

### Instruction:
Archie needs to lay sod in his backyard that measures 20 yards by 13 yards. He has a shed on it that measures 3 yards by 5 yards. How many square yards of sod will Archie need for his backyard?

### Response:
 20 x 13 = <<20*13=260>>260 ตารางหลา
3 x 5 = <<3*5=15>>15 ตารางหลา
260 - 15 = <<260-15=245>>245 ตารางหลา
อาร์ชีต้องใช้หญ้าเท้า 245 ตารางหลา