A project plans to build a road with a length of 5,000 meters, and 30% of the total length has been repaired in the first 6 days. At this speed, how many days will it take to complete the railway.
某工程计划修一条长5000米的公路，前6天修了全长的30%，要照这样的速度，修完这条铁路还需要多少天．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) / 6</gadget>
<output>1/20 = around 0.05</output>

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

<gadget id="calculator">20 - 6</gadget>
<output>14</output>

<result>14</result>