A road has been built for 180 meters, but it has not been repaired (3/4). How long is the road that has not been repaired?
修一条路，已经修了180米，是没修的(3/4)，没修的路有多长？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">180 / (3/4)</gadget>
<output>240</output>

<result>240</result>