Zhuqi Township wanted to build a road, 15% of the total length was repaired in the first week, and 1/3 of the full length was repaired in the second week. There are 3100 meters left to be repaired. How many meters is the total length of this road?
竹岐乡要修一条路，第一周修了全长的15%，第二周修了全长的(1/3)．还剩3100米没有修，请问这条路全长多少米？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (3/20) - (1/3)</gadget>
<output>31/60 = around 0.516667</output>

<gadget id="calculator">3_100 / (31/60)</gadget>
<output>6_000</output>

<result>6_000</result>