A batch of parts is processed in 3 days (3/8) of the total number, and ((())/(())) of the total number is completed every day on average. How many days are needed to process this batch of parts.
一批零件，3天加工了总数的(3/8)，平均每天完成总数的((())/(()))，加工这批零件共需多少天．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

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

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

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

<result>8</result>