Uncle Wang's family has a vegetable field, and he planted (2/7) cabbage and (3/7) radishes in it. What fraction of this land is the land for growing cabbage and radish?
王大伯家有一块菜地，他把其中的种(2/7)白菜，(3/7)种萝卜．种白菜和萝卜的地一共是这块地的几分之几？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">(2/7) + (3/7)</gadget>
<output>5/7 = around 0.714286</output>

<result>5/7 = around 0.714286</result>