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

### Instruction:
 凯瑞身高72英寸。她弟弟比她矮一半，而她妹妹珍比她弟弟高6英寸。珍的身高是多少？


### Response:
 首先，通过将凯瑞的身高除以2来找到比尔的身高：72英寸 / 2 = <<72/2=36>>36英寸
然后再加上6英寸来找到珍的身高：36英寸 + 6英寸 = <<36+6=42>>42英寸