A section of the road has been repaired for the full length (5/7), and there are 200 meters left to be repaired. How long is this section of the road in meters?
一段路已经修了全长的(5/7)，还剩200米没修，这段路长多少米？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 - (5/7)</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">200 / (2/7)</gadget>
<output>700</output>

<result>700</result>