conversations.from: human
conversations.value: The PTA had saved $400 set aside after a fundraising event. They spent a fourth of the money on school supplies. Then they spent half of what was left on food for the faculty. How much money did they have left?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: They spent $400/4=$100 on school supplies.
  They spent $300/2=$150 on food.
  They had $300-150=$150 left.