When repairing a section of road, the full length (1/3) will be 2km longer on the first day, the rest (1/2) will be 1km less on the second day, and the rest (6/11) will be more on the third day 3km. At this time, the remaining 12km has not been completed. How many kilometers is this section of road?
修一段路，第一天修全长的(1/3)还多2km，第二天修余下的(1/2)少1km，第三天修第二天余下的(6/11)还多3km，这时剩下12km没有修完，这段路长多少千米？
<gadget id="calculator">12 + 3</gadget>
<output>15</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">1 - (6/11)</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">15 / (5/11)</gadget>
<output>33</output>

<gadget id="calculator">33 + 1</gadget>
<output>34</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">34 / (1/2)</gadget>
<output>68</output>

<gadget id="calculator">68 + 2</gadget>
<output>70</output>

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

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">70 / (2/3)</gadget>
<output>105</output>

<result>105</result>