The road repair team repaired a road, 40% of the total length was repaired in the first week, and 3.5 kilometers in the second week. The total kilometers repaired in these two weeks were 5.5 kilometers less than the total length. How long is the total length of this road in kilometers? ?
修路队修一条公路，第一周修了全长的40%，第二周修了3.5千米，这两周修的总千米数比全长少5.5千米，这条公路全长多少千米？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">9 / (3/5)</gadget>
<output>15</output>

<result>15</result>