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

### Instruction:
The flowers cost $9, the clay pot costs $20 more than the flower, and the bag of soil costs $2 less than the flower.  How much does it cost to plant the flowers?

### Response:
 กระถางดินราคา $20 + $9 = $<<20+9=29>>29
ถุงดินราคา $9 - $2 = $<<9-2=7>>7
ค่าใช้จ่ายในการปลูกดอกไม้คือ $9 + $29 + $7 = $<<9+29+7=45>>45