A batch of goods was shipped in 3 days, 1/3 of the total amount was shipped on the first day, and the same amount was shipped on the second day as on the first day. What fraction of the total was shipped in two days?
一批货物3天运完，第一天运了总数的(1/3)，第二天运的和第一天一样多．两天运了总数的几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) + (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>