To build a road, (4/5) kilometers were built on the first day, and (1/5) kilometers were repaired on the second day than on the first day. How many kilometers were repaired the next day? What is the correct column
修一条路，第一天修了(4/5)千米，第二天比第一天多修(1/5)千米．第二天修了多少千米？正确的列式是多少
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(4/5) + (1/5)</gadget>
<output>1</output>

<result>1</result>