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

### Instruction:
Building A has 4 floors, which is 9 less than Building B. Building C has six less than five times as many floors as Building B. How many floors does Building C have?

### Response:
 A: 4 ชั้น
B: 4 ชั้น + 9 = <<4+9=13>>13 ชั้น
C: ((13 ชั้น) x 5) - 6 = <<13*5-6=59>>59 ชั้น