There are 48 cars in the parking lot, which is three times the number of big cars, and the number of big cars is 40% of the number of trucks. How many trucks are there?
停车场里有48辆小汽车，是大汽车数量的3倍，大汽车的数量是货车数量的40%，货车有多少辆？
<gadget id="calculator">48 / 3</gadget>
<output>16</output>

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

<gadget id="calculator">16 / (2/5)</gadget>
<output>40</output>

<result>40</result>