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

### Instruction:
Two brick walls are being built. Each wall has 30 bricks in a single row and there are 50 rows in each wall. How many bricks will be used to make both walls?

### Response:
 แต่ละกำแพงต้องใช้อิฐ 30 x 50 = <<30*50=1500>>1500 ลูก
ดังนั้น สองกำแพงต้องใช้อิฐ 1500 x 2 = <<1500*2=3000>>3000 ลูก