Hongguang Village needs to dig a 3,000-meter-long diversion canal. After 8 days of digging, it has been completed (2/5). Based on this calculation, how many days will it take to complete this canal?
红光村要挖一条长3000米的引水渠，挖了8天，已经完成(2/5)，照这样计算，这条水渠还需多少天完成？
<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>