Dongcheng Primary School donated 1,325 books for the school in the mountainous area, and 3 classes for the second grade, each class donated 427 books. How many books are donated by the two grades?
东城小学为山区学校捐图书，一年级捐了1325本，二年级有3个班，每班捐427本．两个年级共捐书多少本？
<gadget id="calculator">427 * 3</gadget>
<output>1_281</output>

<gadget id="calculator">1_281 + 1_325</gadget>
<output>2_606</output>

<result>2_606</result>