A box of apples weighs 32 kg. After half of the apples are sold, the weight of the box is 18 kg. How much does this box of apples weigh (without the box)?
一箱苹果，连箱共重32千克，卖掉一半苹果后，连箱共重18千克．这箱苹果(不连箱)重多少千克？
<gadget id="calculator">32 - 18</gadget>
<output>14</output>

<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<result>28</result>