Gervais drove 3*315 = <<3*315=945>>945 miles

1250 - 945 = <<1250-945=305>>305 miles

Henri drove 305 miles farther.

# Answer

305
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Gervais drove an average of 315 miles for 3 days. Henri drove a total of 1,250 miles over one week. How many miles farther did Henri drive?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
305
Gervais drove an average of 315 miles for 3 days. Henri drove a total of 1,250 miles over one week. How many miles farther did Henri drive?
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