An engineering team repaired a road, and repaired (4/9) kilometers in the first week, (2/9) kilometers in the second week, and (1/9) kilometers less in the third week than the sum of the previous two weeks , How much did you fix in the third week?
某工程队修一条路，第一周修了(4/9)千米，第二周修了(2/9)千米，第三周修的比前两周的总和少(1/9)千米，第三周修了多少？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

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

<gadget id="calculator">(2/9) - (1/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(4/9) + (1/9)</gadget>
<output>5/9 = around 0.555556</output>

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