There are 6 grades in Hongxing Primary School, and each grade has 5 classes. On average, there are 42 books in the book corner of each class. How many books are there in the book corner of this school?
红星小学有6个年级，每个年级有5个班．平均每班的图书角有42本书，这个学校的图书角一共有多少本书？
<gadget id="calculator">42 * 5 * 6</gadget>
<output>1_260</output>

<result>1_260</result>