conversations.from: human
conversations.value: Mom went shopping at the market. She left with €55. She bought 2 packs of bananas for €4 each, pears for €2, asparagus for €6 and finally a chicken for €11. How much money does Mom have left?
  Give me a detailed solution.
conversations.from: assistant
conversations.value: Mom bought things that cost: 4 + 4 + 2 + 6 + 11 = €27 .
  So she has 55 – 27 = €28 left