Xiaohua borrowed "Avanti's Storybook" from the library. She read it on the first day (4/9), and read as much on the second day as on the first day. She read this book in two days What fraction of?
小华从图书馆借来一本《阿凡提的故事书》，她第一天看了(4/9)，第二天看的和第一天同样多，两天一共看了这本书的几分之几？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(4/9) + (4/9)</gadget>
<output>8/9 = around 0.888889</output>

<result>8/9 = around 0.888889</result>