A road repair team needs to build a 2,000-meter-long road, and it takes 5 days to build 400 meters. According to this calculation, how many days will it take to complete the road? (Solve with ratio)
一个修路队要修一条2000米长的公路，5天修了400米，照这样计算，修完这条公路一共要多少天？(用比例解)
<gadget id="calculator">400 / 5</gadget>
<output>80</output>

<gadget id="calculator">2_000 / 80</gadget>
<output>25</output>

<result>25</result>