There are 750 popular science books in the school library, and 200 literature books are 3 times more popular science books. How many literature books are there?
学校图书馆有科普书750本，文学书是科普书的3倍多200本，文学书有多少本？
<gadget id="calculator">750 * 3</gadget>
<output>2_250</output>

<gadget id="calculator">2_250 + 200</gadget>
<output>2_450</output>

<result>2_450</result>