conversations.from: human
conversations.value: I need help with this problem:
  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.
conversations.from: assistant
conversations.value: He does the long drive 7-4=3 days a week
  So he drives a total of 4*50+3*100=500 miles a week
  That means the car cost 500*.1=$50 just for the mileage per week
  So he pays 100+50=$150 per week for the car
  That means the total cost of the car is 150*52=$7800 a year