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

### Instruction:
Trent walked 4 blocks from his house to the bus stop. He rode the bus 7 blocks to the library. Later, he came home the same way. How many blocks did Trent travel in all?

### Response:
 จำนวนบล็อกที่เทรนต์เดินทางไปทางห้องสมุดคือ 4 + 7 = <<4+7=11>>11 บล็อก
เทรนต์เดินทางไปและกลับ 11 × 2 = <<11*2=22>>22 บล็อก