A road has been repaired (2/5) and it is exactly 80 kilometers long. How long is this road in kilometers?
一条路，修了(2/5)正好是80千米，这条路长多少千米．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">80 / (2/5)</gadget>
<output>200</output>

<result>200</result>