conversations.from: human
conversations.value: Matt has 8 baseball cards worth $6 each. If he trades two of them to Jane in exchange for 3 $2 cards and 1 $9 card, how much profit does he make?
  Give me a detailed solution.
conversations.from: assistant
conversations.value: First find the value of the 2 cards Matt trades: $6/card * 2 cards = $12
  Then find the total value of the 3 $2 cards: 3 cards * $2/card = $6
  Then subtract the value of the cards Marcus gave up from the value of the cards he gained to find his profit: $9 + $6 - $12 = $3