To build a road, 1.9 kilometers were built on the first day, which was 0.52 kilometers less than the second day, and there were 1.17 kilometers left to be repaired. How long is this road in kilometers?
修一条公路，第一天修了1.9千米，比第二天少修了0.52千米，还剩1.17千米没修，这条公路全长多少千米？
<gadget id="calculator">1.9 + 0.52 + 1.9 + 1.17</gadget>
<output>5.49</output>

<result>5.49</result>