To build a road, it is planned to build 800m per day, and it can be completed in 25 days. In fact, it only takes 20 days to complete the task. How many percent more roads are built per day than planned?
修一条公路，计划每天修800m，25天可以修完，实际只用了20天就完成任务，实际每天比计划多修路百分之几？
<gadget id="calculator">25 / 20</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">800 * (5/4)</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 800</gadget>
<output>200</output>

<gadget id="calculator">200 / 800</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>