To build a road, 80% of the whole road was repaired on the first day, and the remaining 25% was repaired on the second day, leaving 1200 meters unrepaired. How many meters is the total length of this road?
修一条公路，第一天修了全程的80%，第二天修了剩下的25%，还剩下1200米未修，求这条公路全长多少米？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

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

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

<gadget id="calculator">1 - (4/5) - (1/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1_200 / (3/20)</gadget>
<output>8_000</output>

<result>8_000</result>