A road has been repaired (1/3), exactly 4 kilometers, how many kilometers is the total length of this road?
一条路，已经修了(1/3)，正好修了4千米，这条路全长多少千米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / (1/3)</gadget>
<output>12</output>

<result>12</result>