A certain engineering team repaired a section of road, repaired 20% in the first week, 25% in the second week, and repaired 200m more in the second week than in the first week. How long is this road in meters?
某工程队修一段公路，第一周修了20%，第二周修了25%，第二周比第一周多修了200m．这段公路全长多少米？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">200 / (1/20)</gadget>
<output>4_000</output>

<result>4_000</result>