There are 389 literature and art books in the library, and 11 more science and technology books than literature and art books. How many books are there in total?
图书馆有文艺书389本，科技书比文艺书多11本，两种书一共多少本？
<gadget id="calculator">389 + 11 + 389</gadget>
<output>789</output>

<result>789</result>