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

### Instruction:
 Alfred likes to save $1,000.00 over 12 months for his Christmas shopping.  He has $100.00 left over from last year's holiday to put towards this year's goal.  How much money does Alfred now need to save each month in order to reach his goal in 12 months?


### Response:
 他还有100美元剩下，所以他需要存1000-100 = 900美元。
他想在12个月内存900美元，所以他每个月需要存900/12 = 75美元。