If A and B work together to complete a project in 8 days, A alone will complete it in 12 days, how many days will B alone complete the project (1/3).
一项工程，甲乙合做8天完成，甲独做12天完成，乙独做多少天完成这项工程的(1/3)．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/8) - (1/12)</gadget>
<output>1/24 = around 0.041667</output>

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

<result>8</result>