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

### Instruction:
 马库斯的烤箱一次可以放5个馅饼。他烤了7批馅饼，然后滑倒掉了8个。还剩下多少个馅饼？


### Response:
 首先计算马库斯烤的馅饼总数：每批5个馅饼 * 7批 = <<5*7=35>>35个馅饼
然后减去马库斯掉的馅饼数：35个馅饼 - 8个馅饼 = <<35-8=27>>27个馅饼