A pile of cement was transported (2/7) tons in the morning and (3/7) tons in the afternoon, how many tons were transported in total?
一堆水泥，上午运了(2/7)吨，下午运了(3/7)吨，一共运了多少吨？
<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>