job alone takes 8 hours and B alone takes 6 hours. Now after B has completed (1/3) of the project, how many hours will it take for the two to cooperate to complete the task?
一项工作，甲独做要8小时，乙独做要6小时．现在乙做了工程的(1/3)后，两人合作，还要多少小时才能完成任务？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/8) + (1/6)</gadget>
<output>7/24 = around 0.291667</output>

<gadget id="calculator">(2/3) / (7/24)</gadget>
<output>16/7 = around 2.285714</output>

<result>16/7 = around 2.285714</result>