Enter Chinese characters into the computer. A's work efficiency is equal to that of B and C, and C's work efficiency is one-fifth of that of A and B's work together. There is a book that can be input into the computer by three people working together for 8 hours. If B can input it alone, how many hours will it take?
向电脑输入汉字．甲的工效与乙、丙两人合作的工效相等，丙的工效是甲、乙两人合作工效的五分之一．有一本书，三人分工合作8小时可全部输入电脑，如果乙单独来输，需要多少小时．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

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

<gadget id="calculator">1 - (1/2) - (1/6)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/8) * (1/3)</gadget>
<output>1/24 = around 0.041667</output>

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

<result>24</result>