conversations.from: human
conversations.value: Winston has 14 quarters. He then spends half a dollar on candy. How many cents does he have left?
  How to solve this?
conversations.from: assistant
conversations.value: Winston has 350 cents because 14 x 25 = 350
  He spends 50 cents because $1 / 2 = 50 cents
  He has 300 cents left at the end.