To build a road, the full length (2/3) of the road was built on the first day, and 20% of the total length was repaired on the second day. There are still 2.6 kilometers left to be repaired. How many kilometers is the total length of this road?
修一条路，第一天修了全长的(2/3)，第二天修了全长的20%，还剩2.6千米没修，这条路全长多少千米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (2/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">2.6 / (2/15)</gadget>
<output>19.5</output>

<result>19.5</result>