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

### Instruction:
 Margo donated $4300 to Jayden's fundraising campaign. If Julie donated $4700 to Jayden's campaign, What's half the difference in the amount they contributed?


### Response:
 如果Julie向Jayden的筹款活动捐赠了$4700，而Margo捐赠了$4300，他们的捐赠金额之差为$4700-$4300=$<<4700-4300=400>>400。
他们的捐赠金额之差的一半为1/2*$400=$<<400/2=200>>200。