There are 1,500 literature and art books in the school library, which is equivalent to (3/5) of the story books. How many percent are the literature and art books in the school library less than the story books?
学校图书室有文艺书1500本，相当于故事书的(3/5)，学校图书室的文艺书比故事书少百分之几？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1_500 / (3/5)</gadget>
<output>2_500</output>

<gadget id="calculator">2_500 - 1_500</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 / 2_500</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>