There is a road construction team repairing a road with a length of 240 kilometers, and 1/5 of the full length was repaired in the first 4 days. According to this calculation, how many days will it take to complete the road?
有一个筑路队修一条长240千米的公路，前4天修了全长的(1/5)，照这样计算，修完这条路需用多少天？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / 4</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">240 * (1/20)</gadget>
<output>12</output>

<gadget id="calculator">240 / 12</gadget>
<output>20</output>

<result>20</result>