To build a road, team A repairs 9 kilometers per day, and team B repairs 8.6 kilometers per day. Both teams start from one end of the road at the same time. As a result, team A reaches the middle of the road 2 days earlier than team B. This road has how long? (column solution)
修一条公路，甲队每天修9千米，乙队每天修8.6千米，两队各从公路的一端同时修起，结果甲队比乙队早2天修到公路中点，这条公路有多长？(列式解答)
<gadget id="calculator">9 - 8.6</gadget>
<output>0.4</output>

<gadget id="calculator">2 / 0.4</gadget>
<output>5</output>

<gadget id="calculator">8.6 * 5</gadget>
<output>43</output>

<gadget id="calculator">8.6 * 43</gadget>
<output>369.8</output>

<gadget id="calculator">8.6 * 2</gadget>
<output>17.2</output>

<gadget id="calculator">369.8 + 17.2</gadget>
<output>387</output>

<gadget id="calculator">387 * 2</gadget>
<output>774</output>

<result>774</result>