The school library has 3,200 volumes of science and technology books, and 1,500 volumes of entertainment books are twice as many as science and technology books. How many volumes are there in total?
学校图书馆有科技书3200册，文娱书比科技书的2倍多1500册．这两种书共有多少册？
<gadget id="calculator">3_200 * 2</gadget>
<output>6_400</output>

<gadget id="calculator">6_400 + 1_500 + 3_200</gadget>
<output>11_100</output>

<result>11_100</result>