The school shipped 256 science and technology books, 27 less than literature and art books, and the number of comic books is twice that of literature and art books. How many comic books are there?
学校运来256本科技书，比文艺书少27本，连环画是文艺书的2倍，连环画多少本？
<gadget id="calculator">256 + 27</gadget>
<output>283</output>

<gadget id="calculator">283 * 2</gadget>
<output>566</output>

<result>566</result>