It takes 24 days for A and B to complete a job together. If A works for 6 days first, and then B works for 16 days, the total (5/12) of this work will be completed. If the job is done by A alone, how many days will it take to complete it?
一项工作，甲、乙合作要24天完成．若甲先做6天后，再由乙工作16天，共完成这件工作的(5/12)．如果这件工作由甲单独做，需要多少天完成？
<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">(1/24) * 6</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(5/12) - (1/4)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">16 - 6</gadget>
<output>10</output>

<gadget id="calculator">(1/6) / 10</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/24) - (1/60)</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">1 / (1/40)</gadget>
<output>40</output>

<result>40</result>