There are 200 story books in the library, the number of reference books is 4/5 of the story books, and the number of literature and art books is 3/4 of the reference books, how many literature and art books are there?
图书馆有200本故事书，工具书的本数是故事书的(4/5)，文艺书本数是工具书的(3/4)，文艺书共有多少本？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">80 * (3/4)</gadget>
<output>60</output>

<result>60</result>