To build a 3-kilometer-long road, (5/6) of the road was built for the first time, and (5/6) kilometers were built for the second time. How many kilometers were built in total?
修一条3千米长的公路，第一次修了这条公路的(5/6)，第二次修了(5/6)千米，两次共修多少千米？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">3 * (5/6)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(5/2) + (5/6)</gadget>
<output>10/3 = around 3.333333</output>

<result>10/3 = around 3.333333</result>