A road is (8/9) kilometers long, the full length (1/3) was repaired in the first week, the full length (1/4) was repaired in the second week, and the repair was completed in the third week. What fraction of the total length was repaired in the third week?
一条路长(8/9)千米，第一周修了全长的(1/3)，第二周修了全长的(1/4)，第三周修完．第三周修了全长的几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/3) - (1/4)</gadget>
<output>5/12 = around 0.416667</output>

<result>5/12 = around 0.416667</result>