The school shipped a batch of exercise books and distributed them to 14 classes. After 150 copies were distributed to each class, there were 210 books left. How many exercise books were shipped in total?
学校运来一批练习本，发给14个班，每个班发150本后，还剩210本，一共运来多少本练习本？
<gadget id="calculator">150 * 14</gadget>
<output>2_100</output>

<gadget id="calculator">2_100 + 210</gadget>
<output>2_310</output>

<result>2_310</result>