conversations.from: human
conversations.value: There are 90 rooms at the KozyInn Motel. It takes housekeeping 20 minutes to clean each room. How many hours would it take to clean one-half of the rooms?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: 90 * 20 = 1800 minutes
  1800/2 = 900 minutes
  900 minutes = 15 hours
  It would take 15 hours to clean 45 rooms at the KozyInn Motel.