The supermarket has a new batch of clothing, and it sells (2/7) of the total amount on the first day and (3/7) of the total amount on the second day. What fraction of the total amount is sold in the two days?
超市新进了一批服装，第一天售出总量的(2/7)，第二天售出总量的(3/7)，两天一共售出总量的几分之几？
<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>