A workshop plans to produce 3,000 parts. After 8 days of production, it has been completed (2/5). According to this calculation, how many days can this batch of parts be completed?
某车间计划生产3000个零件，生产8天后，已经完成(2/5)，照这样计算，这批零件多少天可完成？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 8</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">3_000 * (1/20)</gadget>
<output>150</output>

<gadget id="calculator">3_000 / 150</gadget>
<output>20</output>

<result>20</result>