A section of road was repaired in two weeks, and 45% of the total length was repaired in the first week, which was 80 meters less than that in the second week. How many meters is the total length of this road?
一段公路两周修好，第一周修了全长的45%，比第二周少修80米，这段公路全长多少米？
<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (9/20) - (9/20)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">80 / (1/10)</gadget>
<output>800</output>

<result>800</result>