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

### Instruction:
Twenty years ago, Shane was 2 times older than Garret is now. If Garret is currently 12, how old is Shane now?

### Response:
 20 ปีก่อนหน้านี้ ชานอายุ 24 ปี
ชานอายุในปัจจุบันคือ 24 + 20 = 44 ปี