A box of apples weighs 61 kilograms in total. Half of the apples are sold on the first day, and the remaining half is sold on the second day. At this time, the box still has 22 kilograms. It turns out that the net weight of the box is (how many) kilograms.
一箱苹果连箱共重61千克，第一天卖出一半，第二天又卖出剩下的一半，这时连箱还有22千克，原来这箱苹果净重(多少)千克．
<gadget id="calculator">22 * 2 * 2</gadget>
<output>88</output>

<gadget id="calculator">88 - 61</gadget>
<output>27</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">27 / 3</gadget>
<output>9</output>

<gadget id="calculator">61 - 9</gadget>
<output>52</output>

<result>52</result>