The road repair team repaired a road. On the first day, they repaired 3.45 kilometers, which was 0.68 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3.45千米，比第二天多修了0.68千米，两天共修了多少千米？
<gadget id="calculator">3.45 - 0.68</gadget>
<output>2.77</output>

<gadget id="calculator">2.77 + 3.45</gadget>
<output>6.22</output>

<result>6.22</result>