The road repair team completed a section of road in three days. On the first day, 20% of the total length was repaired, on the second day, 600 meters were repaired, and on the third day, the sum of the previous two days was repaired. How long is this road in meters?
修路队用三天时间修完一段公路，第一天修了全长的20%，第二天修了600米，第三天修的是前两天的总和，这条路全长多少米？
<gadget id="calculator">1 - 0.4</gadget>
<output>0.6</output>

<gadget id="calculator">1_200 / 0.6</gadget>
<output>2_000</output>

<result>2_000</result>