To build a road, the full length (1/11) was repaired on the first day, and the rest (1/10) was repaired on the second day. Now there are 540 kilometers left to be repaired. How many kilometers of roads have been repaired in two days?
修一条公路，第一天修了全长的(1/11)，第二天修了余下的(1/10)，现在还剩下540千米没有修，两天一共修了公路多少千米？
<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">1 - (1/11)</gadget>
<output>10/11 = around 0.909091</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(10/11) * (1/10)</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">1 - (1/11) - (1/11)</gadget>
<output>9/11 = around 0.818182</output>

<gadget id="calculator">540 / (9/11)</gadget>
<output>660</output>

<gadget id="calculator">660 - 540</gadget>
<output>120</output>

<result>120</result>