conversations.from: human
conversations.value: Natasha exercised for 30 minutes every day for one week. Esteban exercised for 10 minutes on each of nine days. How many hours did Natasha and Esteban exercise in total?
conversations.from: assistant
conversations.value: Natasha = 30 * 7 = 210 minutes
  Esteban = 10 * 9 = 90 minutes
  Total = 210 + 90 = 300 minutes
  300 minutes = 5 hours
  Natasha and Esteban exercised for a total of 5 hours.