Copying a manuscript, A's daily work efficiency is equal to the sum of the daily work efficiency of B and C; C's daily work efficiency is equivalent to the sum of A and B's daily work efficiency (1/5); if three people It only takes 8 days to complete the combined copying, so how many days will it take for B to complete the copying alone?
抄一份书稿，甲每天的工作效率等于乙、丙二人每天的工作效率的和；丙每天的工作效率相当于甲、乙二人每天工作效率之和的(1/5)；如果三人合抄只需8天就完成了，那么乙一人单独抄需多少天才能完成？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/8) / (6/5)</gadget>
<output>5/48 = around 0.104167</output>

<gadget id="calculator">(1/8) / 2</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">(5/48) - (1/16)</gadget>
<output>1/24 = around 0.041667</output>

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

<result>24</result>