To build a road, 40% of the total length was repaired on the first day, and 37.5% of the total length was repaired on the second day, leaving 180 meters to be repaired. How many meters is this road in total?
修一条公路，第一天修了全长的40%，第二天修了全长的37.5%，还剩180米没有修，这条公路共长多少米？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">37.5 / 100</gadget>
<output>0.375</output>

<gadget id="calculator">1 - (2/5) - 0.375</gadget>
<output>0.225</output>

<gadget id="calculator">180 / 0.225</gadget>
<output>800</output>

<result>800</result>