The school library bought a batch of books, science and technology books accounted for (2/5) of this batch of books, story books accounted for (1/9) of this batch of books, and the rest were literature and art books, literature and art books accounted for a fraction of this batch of books How much?
学校图书馆买了一批书，科技书占这批书的(2/5)，故事书占这批书的(1/9)，其余的是文艺书，文艺书占这批书的几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">1 - (2/5) - (1/9)</gadget>
<output>22/45 = around 0.488889</output>

<result>22/45 = around 0.488889</result>