To build a road, the original plan was to build 0.67 kilometers per day, but the actual daily repair was 1.24 kilometers more than the original plan. After a week, there was still 4.8 kilometers left unrepaired. How long is this road in kilometers?
修一条公路，原计划每天修0.67千米，实际每天比原计划多修1.24千米，一星期后还差4.8千米没有修，这条路长多少千米？
<gadget id="calculator">0.67 + 1.24</gadget>
<output>1.91</output>

<gadget id="calculator">1.91 * 7</gadget>
<output>13.37</output>

<gadget id="calculator">13.37 + 4.8</gadget>
<output>18.17</output>

<result>18.17</result>