Mom bought some apples, pears and oranges. The total weight of apples and pears was 5.4 kg, and the total weight of pears and oranges was 3.28 kg. How much did the bought apples weigh more than oranges?
妈妈买来一些苹果、梨和橘子，苹果和梨一共5.4千克，梨和橘子一共重3.28千克，买来的苹果比橘子重多少千克？
<gadget id="calculator">5.4 - 3.28</gadget>
<output>2.12</output>

<result>2.12</result>