 
 <prompt> ```Gervais drive an average of 315 miles for 3 days. Henri drive a total of 1,250 miles over one week. How many miles farther Henri drive?``` <response>: ```Gervais drive 3*315 = 945 miles
1250 - 945 = 305 miles
Henri drive 305 miles farther.

The final answer: 305.``` 