conversations.from: human
conversations.value: Break down this math problem: Lynne bought 7 books about cats and 2 books about the solar system. She also bought 3 magazines. Each book cost 7$ and each magazine cost $4. How much did Lynne spend in all?
conversations.from: assistant
conversations.value: Lynne bought a total of 7 + 2 = 9 books
  The books cost Lynne 9 x 7 = $63
  For 3 magazines, Lynne spent 3 x 4 = $12
  In total, Lynne spent 63 + 12 = 75$