The engineering team wants to build a 500-meter-long canal. In fact, the full length (1/4) was repaired in 6 days. According to this calculation, how many days will it take for the engineering team to complete the canal?
工程队要修一条长500米的水渠．实际6天修了全长的(1/4)，照这样计算，这个工程队修完这条水渠还要用多少天？
<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) / 6</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(3/4) / (1/24)</gadget>
<output>18</output>

<result>18</result>