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

### Instruction:
Tom’s cat is 8 years old.  His rabbit is half the age of his cat.  His dog is three times as old as his rabbit.  How old is the dog?

### Response:
 กระต่ายของทอมมีอายุ 1/2 * 8 ปี = <<1/2*8=4>>4 ปี
เจ้าหมาของเขามีอายุ 3 * 4 ปี = <<3*4=12>>12 ปี