To build a road, 124.5 kilometers have been repaired, and the rest is 13.8 kilometers less than the one that has been repaired. How many kilometers is the total length of this road?
修一条公路，已经修好了124.5千米，剩下的比已经修好的少13.8千米，这条公路全长多少千米？
<gadget id="calculator">124.5 - 13.8</gadget>
<output>110.7</output>

<gadget id="calculator">110.7 + 124.5</gadget>
<output>235.2</output>

<result>235.2</result>