The municipal engineering team laid a (4/5) kilometer-long pipeline. On the first day, (1/3) kilometer was laid, and on the second day, it was (1/9) kilometer longer than the first day. How many kilometers were paved in two days?
市政工程队铺设一条(4/5)千米长的管道，第一天铺了(1/3)千米，第二天比第一天多铺了(1/9)千米．两天一共铺了多少千米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/3) + (1/9) + (1/9)</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>