Two engineering teams, A and B, jointly repaired a railway. Team A repaired the full length (2/5), and Team B repaired the full length (1/15) less than Team A. They repaired a fraction of the total length ?
甲、乙两个工程队共同修一条铁路，甲队修了全长的(2/5)，乙队比甲队少修了全长的(1/15)，他们一共修了全长的几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(2/5) - (1/15)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(2/5) + (1/3)</gadget>
<output>11/15 = around 0.733333</output>

<result>11/15 = around 0.733333</result>