The road repair team has repaired a road, which is 6 kilometers less than the whole journey (2/5), and the remaining 30 kilometers have not been repaired. How long is this road in kilometers?
修路队修一条公路，已经修的比全程的(2/5)还少6千米，剩下30千米没修，这条公路长多少千米？
<gadget id="calculator">30 - 6</gadget>
<output>24</output>

<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>