The school is going to distribute extra-curricular books to 15 classes, each class has 132 books, and 50 books are needed as donations to the disaster-stricken areas. How many extra-curricular books should the school buy?
学校准备发课外书，发给15个班，每班132本，还需要50本作为捐赠灾区的物品，学校应买多少本课外书？
<gadget id="calculator">132 * 15</gadget>
<output>1_980</output>

<gadget id="calculator">1_980 + 50</gadget>
<output>2_030</output>

<result>2_030</result>