An engineering team repaired a road, and repaired the full length (1/4) in the first month, and repaired the full length (1/5) in the second month, and repaired 28 kilometers more in the second month than in the first month. How long is this road in kilometers?
某工程队修一条公路，第一个月修了全长的(1/4)，第二个月修了全长的(1/5)，第二个月比第一个月多修28千米，这条公路全长多少千米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</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">28 / (1/20)</gadget>
<output>560</output>

<result>560</result>