A basket of fruit weighs 48 kg in total. After 40% of the fruit is sold, the weight of the basket is 30 kg. How much does the fruit basket weigh?
一筐水果连筐共重48千克，卖出水果的40%后，连筐共重30千克，这个水果筐有多重？
<gadget id="calculator">48 - 30</gadget>
<output>18</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">18 / (2/5)</gadget>
<output>45</output>

<gadget id="calculator">48 - 45</gadget>
<output>3</output>

<result>3</result>