The fruit wholesale store ships in a batch of fruits, and sells (2/9) of the total on the first day, (1/9) of the total on the second day, and sells on the third day equal to the sum of the previous two days, How much was bought on the third day?
水果批发商店运进一批水果，第一天卖出总数的(2/9)，第二天卖出总数的(1/9)，第三天卖出的等于前两天卖出的总和，第三天买出几分之几？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(2/9) + (1/9)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>