There are 200 story books in the fifth grade of Tongle School, the number of science books is 3/5 of the story books, and the number of science books is 3/5 of the literature books. How many literature books are there?
同乐学校五年级有故事书200本，科技书的本数是故事书的(3/5)，科技书的本数是文艺书的(3/5)，文艺书有多少本？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">200 * 1</gadget>
<output>200</output>

<result>200</result>