It takes 6 hours for the master and apprentice to complete a batch of parts, and 8 hours for the master to complete alone. Now, after 2 hours of master and apprentice cooperation, the remaining parts will be made by the apprentice alone. How many hours will it take to complete?
一批零件，师徒共同完成需6小时，师傅单独完成需8小时，现师徒合作2小时后，剩下的零件由徒弟单独做，还需几小时完成？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) * 2</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) - (1/8)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(2/3) / (1/24)</gadget>
<output>16</output>

<result>16</result>