road was originally planned to be built for 0.55 kilometers per day, but it was actually built 0.35 kilometers more than the original plan every day, and it was completed in 18 days. How long is this road in kilometers?
一条公路，原计划每天修0.55千米，实际每天比原计划多修0.35千米，18天修完，这条公路长多少千米？
<gadget id="calculator">0.55 + 0.35</gadget>
<output>0.9</output>

<gadget id="calculator">0.9 * 18</gadget>
<output>16.2</output>

<result>16.2</result>