The school library bought 260 new books, of which science and technology books accounted for 55%, literary books accounted for 25%, and the rest were story books. How many story books are there?
学校图书馆买来260本新图书，其中科技书占55%，文艺书占25%，其余的都是故事书，故事书有多少本？
<gadget id="calculator">55 / 100</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (11/20) - (1/4)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">260 * (1/5)</gadget>
<output>52</output>

<result>52</result>