The road repair team repaired a road. On the first day, they repaired 3.56 kilometers, which was 0.78 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3.56千米，比第二天多修了0.78千米，两天共修了多少千米？
<gadget id="calculator">3.56 - 0.78</gadget>
<output>2.78</output>

<gadget id="calculator">2.78 + 3.56</gadget>
<output>6.34</output>

<result>6.34</result>