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

### Instruction:
 一个木匠正在建造一座房子。他需要80个木块来建造。如果他有8根木材，每根木材可以制作五个木块，那么木匠还需要多少根木材？


### Response:
 木匠最初有8 x 5 = <<8*5=40>>40个木块。
所以他还缺少80 - 40 = <<80-40=40>>40个木块。
因此他还需要40 / 5 = <<40/5=8>>8根木材。