The fortified road construction team plans to build 600 meters of road every day, and the task can be completed in 25 days. The actual task is completed in 20 days. How much more is the actual completion per day than the original plan?
攻坚修路队计划每天修路600米，25天可以完成任务，实际20天完成任务，实际每天比原计划每天多完成百分之几？
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">(1/20) - (1/25)</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">(1/100) / (1/25)</gadget>
<output>1/4 = around 0.25</output>

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