The villagers of Xingfu Village wanted to build a canal, and they built the full length (2/5) in 8 days. Based on this calculation, how many days will it take to finish the remaining canals?
幸福村村民要修一条水渠，8天修了全长的(2/5)．照这样计算，修完剩下的水渠还要多少天？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) / (1/20)</gadget>
<output>12</output>

<result>12</result>