road has been repaired for the full length (2/5), and there are 60 kilometers left. How many kilometers is the total length of this road?
一条公路已经修了全长的(2/5)，还剩60千米，这条公路全长多少千米．
<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">60 / (3/5)</gadget>
<output>100</output>

<result>100</result>