A fruit station brings in a batch of fruits, sells (4/9) of the total on the first day, and sells more (2/9) of the total than on the second day, what fraction of the total is sold in the two days?
一个水果站运进一批水果，第一天卖出总数的(4/9)，比第二天多卖出总数的(2/9)，两天一共卖出总数的几分之几？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(4/9) - (2/9)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(2/9) + (4/9)</gadget>
<output>2/3 = around 0.666667</output>

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