A batch of clothing was rushed to be produced (1/4) in 10 days. In order to speed up the progress, the efficiency was increased by 50%. If this is the case, how many days will it take to complete the remaining tasks?
赶制一批服装，10天完成了(1/4)，为了加快进度，效率提高了50%，照这样，完成余下的任务还要多少天．
<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) / 10</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(1/40) * (3/2)</gadget>
<output>3/80 = around 0.0375</output>

<gadget id="calculator">(3/4) / (3/80)</gadget>
<output>20</output>

<result>20</result>