A new batch of books is added to a library. The ratio of story books, science books and literature and art books is 5:4:3. It is known that there are 200 fewer literature and art books than story books. How many books are there in this batch?
一个图书馆新进一批图书，故事书、科技书和文艺术的比是5：4：3，已知文艺书比故事书少200本，这批图书共有多少本？
<gadget id="calculator">3 + 4 + 5</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(5/12) - (1/4)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">200 / (1/6)</gadget>
<output>1_200</output>

<result>1_200</result>