The road construction team repaired a road, and repaired the full length (2/5) on the first day, and the full length (3/10) on the second day, a total of 240 meters in two days. How long is this road in meters?
修路队修一条路，第一天修了全长的(2/5)，第二天修了全长的(3/10)，两天刚好共修了240米．这条路全长多少米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(2/5) + (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">240 / (7/10)</gadget>
<output>2_400/7 = around 342.857143</output>

<result>2_400/7 = around 342.857143</result>