conversations.from: human
conversations.value: Oranges have 80 calories and cost $1.20 each. If Timmy has $10 and needs to make sure he gets 400 calories, how much money will he have left after he buys the oranges he needs?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: He needs to buy 5 oranges because 400 / 80 = 5
  These will cost $6 because 5 x 1.2 = 6
  He will have $4 left because 10 - 6 = 4