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

### Instruction:
 哈利在制作巧克力曲奇饼面团时使用了一整袋巧克力豆。这个面团可以做三批曲奇饼，每个饼干里有九颗巧克力豆。一袋巧克力豆里有81颗。一批曲奇饼有多少个？


### Response:
 一批曲奇饼里有81 / 3 = <<81/3=27>>27颗巧克力豆。
因此，一批曲奇饼有27 / 9 = 3个。