Prosperity Primary School plans to distribute exercise books to 16 classes, each class has 190 exercise books, and needs to keep 260 copies as spares. How many exercise books should a school buy?
繁荣小学准备发给16个班练习本，每班190本，还需要留260本作为备用．学校应买多少本练习本就够用？
<gadget id="calculator">190 * 16</gadget>
<output>3_040</output>

<gadget id="calculator">3_040 + 260</gadget>
<output>3_300</output>

<result>3_300</result>