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

### Instruction:
Jason's dog has a tail that's half the length of its body, and a head that's 1/6 the length of its body. If the dog is 30 inches long overall, how long is its tail?

### Response:
 ร่างกายของสุนัขยาว 30 นิ้ว - 12 นิ้ว (หัว) = <<30-12=18>>18 นิ้ว
หางของสุนัขยาว 18 นิ้ว / 2 = <<18/2=9>>9 นิ้ว