The school is going to buy exercise books and distribute them to 15 classes, with 136 books per class. How many exercise books should schools buy?
学校准备买练习本，发给15个班，每班136本．学校应该买多少本练习本？
<gadget id="calculator">136 * 15</gadget>
<output>2_040</output>

<result>2_040</result>