There are 4,500 books in the school library, among which science and technology books account for 4/9 of the total number of books, and literature and art books account for 3/10 of the total number of science and technology books. How many literature and art books does the school have?
学校图书馆有图书4500本，其中科技书占总本数的(4/9)，文艺书的本数是科技书的(3/10)，求学校有文艺书多少本？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">4_500 * (4/9) * (3/10)</gadget>
<output>600</output>

<result>600</result>