To build a canal, Team A built (2/5) of this canal in 4 days. According to this calculation, how many days will Team A need to repair the remaining canals?
修一条水渠，甲队4天修了这条水渠的(2/5)，照这样计算，剩下的水渠甲队还要修多少天？
<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) / 4</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(3/5) / (1/10)</gadget>
<output>6</output>

<result>6</result>