He does the long drive 7-4=<<7-4=3>>3 days a week

So he drives a total of 4*50+3*100=<<4*50+3*100=500>>500 miles a week

That means the car cost 500*.1=$<<500*.1=50>>50 just for the mileage per week

So he pays 100+50=$<<100+50=150>>150 per week for the car

That means the total cost of the car is 150*52=$<<150*52=7800>>7800 a year

# Answer

7800
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Tom decides to lease a car.  He drives 50 miles on Monday, Wednesday, and Friday, and Sunday for the rest of the days he drives 100 miles.  He has to pay $.1 per mile he drives.  He also has to pay a weekly fee of $100.  How much does he have to pay in a year.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
7800
Tom decides to lease a car.  He drives 50 miles on Monday, Wednesday, and Friday, and Sunday for the rest of the days he drives 100 miles.  He has to pay $.1 per mile he drives.  He also has to pay a weekly fee of $100.  How much does he have to pay in a year.
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