conversations.from: human
conversations.value: Explain how to solve this math problem: Adah practiced the cello for a total of 7.5 hours last week. He practiced for 86 minutes on each of 2 days. How many minutes in total did he practice on the other days?
conversations.from: assistant
conversations.value: 7.5 hours = 450 minutes
  Two days = 2 * 86 = 172 minutes
  450 - 172 = 278 minutes
  Adah practiced a total of 278 minutes on the other days.