Each class borrows books from the school library, among which 16 classes borrow 54 books per class, and 7 classes borrow 50 books per class. How many books have been borrowed from the library?
各班向学校图书室借书，其中16个班每班借54本，7个班每班借50本．图书室一共借出了多少本书？
<gadget id="calculator">54 * 16</gadget>
<output>864</output>

<gadget id="calculator">50 * 7</gadget>
<output>350</output>

<gadget id="calculator">864 + 350</gadget>
<output>1_214</output>

<result>1_214</result>