It has been 12 days to build a road, an average of 2.4 kilometers per day, and there are 6.2 kilometers left to be repaired. How many kilometers is this road?
修一条公路，已经修了12天，平均每天修2.4千米，还剩6.2千米没有修．这条公路长多少千米？
<gadget id="calculator">2.4 * 12</gadget>
<output>28.8</output>

<gadget id="calculator">28.8 + 6.2</gadget>
<output>35</output>

<result>35</result>