A basket of bananas weighs 42 kg. After selling (1/2), the remaining basket weighs 29 kg. How many kilograms does the basket weigh?
一筐香蕉连筐重42千克，卖出(1/2)后，剩下的连筐重29千克．筐重多少千克？
<gadget id="calculator">42 - 29</gadget>
<output>13</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">13 / (1/2)</gadget>
<output>26</output>

<gadget id="calculator">42 - 26</gadget>
<output>16</output>

<result>16</result>