A road has been built for 24 kilometers, and the full length (2/5) remains. How long is this road in kilometers?
一条路已修24千米，还剩全长的(2/5)．这条路全长多少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">24 / (3/5)</gadget>
<output>40</output>

<result>40</result>