A construction team repaired a canal. It repaired (3/5) kilograms in the first week, (5/6) kilometers in the second week, and (1/4) kilometers less than the sum of the previous two weeks in the third week. How many kilometers did you repair in the third week?
某施工队修一条水渠，第一周修了(3/5)千克，第二周修了(5/6)千米，第三周比前两周修的总和少(1/4)千米．第三周修了多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">(5/6) - (1/4)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(3/5) + (7/12)</gadget>
<output>71/60 = around 1.183333</output>

<result>71/60 = around 1.183333</result>