Xiaohong and Xiaohua made a batch of paper flowers together. Xiaohong did (2/7), Xiaohua did (3/7), how much did they do together?
小红和小华共同做一批纸花．小红做了(2/7)，小华做了(3/7)，两人一共做了几分之几？
<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>