To build a road, 30% of the total length was repaired on the first day, and 40% of the total length was repaired on the second day, leaving 60 meters to be repaired. How many meters is the total length of this road?
修一条路，第一天修了全长的30%，第二天修了全长的40%，还剩下60米没修，这条路全长多少米？
<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">(3/10) + (2/5)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">60 / (3/10)</gadget>
<output>200</output>

<result>200</result>