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

### Instruction:
Ryan wants to take 5 peanut butter sandwiches to the beach.  If each sandwich consists of 3 slices of bread how many slices does Ryan need to make 5 sandwiches?

### Response:
 ไรอันต้องใช้แผ่นขนมปัง 3*5 = <<3*5=15>>15 แผ่นเพื่อทำขนมปัง 5 ชิ้น