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

### Instruction:
Johann and two friends are to deliver 180 pieces of certified mail. His friends each deliver 41 pieces of mail. How many pieces of mail does Johann need to deliver?

### Response:
 เพื่อน = 41 * 2 = 82
โจแฮน = 180 - 82 = <<180-82=98>>98
โจแฮนต้องส่งจดหมาย 98 ชิ้น