60% of the total length of a road has been built, and there are still 240 meters left to be completed. How many meters is the total length?
修一条路，已经修了全长的60%，还剩240米没有修完，全长多少米？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">240 / (2/5)</gadget>
<output>600</output>

<result>600</result>