The road construction team repaired a road. On the first day, they repaired 3.4 kilometers, which was 0.6 kilometers more than the second day. How many kilometers were repaired in two days?
修路队修一条公路，第一天修了3.4千米，比第二天多修了0.6千米，两天共修了多少千米？
<gadget id="calculator">3.4 - 0.6</gadget>
<output>2.8</output>

<gadget id="calculator">2.8 + 3.4</gadget>
<output>6.2</output>

<result>6.2</result>