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

### Instruction:
Felix is chopping down trees in his backyard. For every 13 trees he chops down he needs to get his axe resharpened. It cost him $5 to sharpen his axe. If he spends $35 on axe sharpening, at least how many trees has he chopped down?

### Response:
 เขาเลื่อยใหม่ไป 7 ครั้งเพราะว่า 35 / 5 = <<35/5=7>>7
เขาตัดต้นไม้ไป 91 ต้นเพราะว่า 7 x 13 = <<7*13=91>>91