Two teams, A and B, went to build the road. Team A completed the total project (4/15), and team B completed this project more than team A (2/15). The two teams completed a fraction of the total project ?
甲、乙两队去修路，甲队完成总工程的(4/15)，乙队比甲队多完成这项工程的(2/15)，两队一共完成了总工程的几分之几？
<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">(4/15) + (2/15) + (4/15)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>