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

### Instruction:
 玛吉摘了40个苹果。凯尔西摘了28个苹果。莱拉也摘了一些苹果。三个人平均摘了30个苹果。莱拉摘了多少个？


### Response:
 他们一共摘了30*3=<<30*3=90>>90个苹果。
已经算上的有40+28=<<40+28=68>>68个。
那么莱拉摘了90-68=<<90-68=22>>22个。