A highway has been built for 840 meters, which is 12 times the length of the road section that has not been repaired. How long is this road in meters?
修一条公路，已修好840米，是没有修好的路段长度的12倍，这条路全长多少米？
<gadget id="calculator">840 / 12</gadget>
<output>70</output>

<gadget id="calculator">70 + 840</gadget>
<output>910</output>

<result>910</result>