conversations.from: human
conversations.value: Can you guide me through solving this problem: Sasha can complete 15 questions an hour. If she has 60 questions to complete and she works for 2 hours, how many questions does she still need to complete?
conversations.from: assistant
conversations.value: Sasha completes 15 questions/hour * 2 hours = 30 questions.
  This means there are still 60 questions – 30 questions = 30 questions left to complete.