A bundle of wires, use up the full length (2/5), and there are 60 meters left, how many meters is the total length of this bundle of wires?
一捆电线，用去全长的(2/5)，还剩下60米，这捆电线全长有多少米？
<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>