30% of the total length of a road was repaired for the first time, and 40% of the total length was repaired for the second time, leaving 360 meters unrepaired. How long is this road in meters?
一条公路，第一次修了全长的30%，第二次修了全长的40%，还剩下360米没有修，这条公路长多少米？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (3/10) - (2/5)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">360 / (3/10)</gadget>
<output>1_200</output>

<result>1_200</result>