conversations.from: human
conversations.value: Janna sleeps 7 hours each day during weekdays and 8 hours each day during weekends. How many hours does she sleep in a week?
  Give me a detailed solution.
conversations.from: assistant
conversations.value: She sleeps 7*5=35 hours on weekdays.
  She sleeps 8*2=16 hours on weekends.
  35 + 16 = 51 hours is the amount of time she sleeps in a week.