conversations.from: human
conversations.value: Find a solution for this math problem: Karen is considering her winter coat options. One coast costs $300 and will last for 15 years. The other coat costs $120 and will last for five years. How much money would Karen save over 30 years by buying the more expensive cost?
conversations.from: assistant
conversations.value: First find the number of cheaper coats Karen will have to purchase over 30 years: 30 years / 5 years/coat = 6 coats
  Then multiply that number by the cost of one cheaper coat to find the total cost of that option: 6 coats * $120/coat = $720
  Then find the number of more expensive coats Karen will have to purchase over 30 years: 30 years / 15 years/coat = 2 coats
  Then multiply that number by the cost of one expensive coat to find the total cost of that option: 2 coats * $300/coat = $600
  Then subtract the total cost of the more expensive coats from the total cost of the less expensive coats to find the difference: $720 - $600 = $120