There is an orchard, (3/7) of the orchard area is peach trees, and (2/7) of the orchard area is plum trees, what percentage of the orchard area do these two kinds of fruit trees occupy?
有一个果园，果园面积的(3/7)种桃树，果园面积的(2/7)种李树，这两种果树的占地面积共占果园面积的几分之几？
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

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

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