A 60-kilometer road has been repaired for the full length (3/5), how many kilometers are left?
一条60千米的公路，已经修了全长的(3/5)，还剩多少千米．
<gadget id="calculator">3 / 5</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">60 * (2/5)</gadget>
<output>24</output>

<result>24</result>