A project is to be done by A for 2 days first, and then B for 3 days to complete (1/4) of the whole project, and A to complete the remaining (1/4) in 3 days. If B alone does this project, how many days done?
一项工程由甲先做2天，乙再做3天，完成全工程的(1/4)，甲再做3天完成余下的(1/4)，如果由乙独做这项工程需几天完成？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/4) / 3</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(3/4) * (1/12) * 2</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/4) - (1/8)</gadget>
<output>1/8 = around 0.125</output>

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

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

<result>24</result>