conversations.from: human
conversations.value: Can you guide me through solving this problem: A housewife goes to the market. She spent 2/3 of her $150. How much does she have left?
conversations.from: assistant
conversations.value: The housewife has 3/3 - 2/3 = 1/3 of $150 left.
  This means she has $150 * (1/3) = $50 left.