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

### Instruction:
 史蒂芬的蚂蚁农场里有110只蚂蚁。一半的蚂蚁是工蚁，工蚁中有20%是雄性。有多少只雌性工蚁？


### Response:
 工蚁：110/2=<<110/2=55>>55只蚂蚁
雄性工蚁：55(.20)=11只蚂蚁
有55-11=<<55-11=44>>44只雌性工蚁