There are 4 classes in each grade of the fourth and fifth grades of Anjuyuan Primary School. They donated a total of 544 books to primary schools in the disaster area. How many books are donated by each class on average?
安居苑小学四、五年级每个年级都有4个班．他们为灾区小学捐书，一共捐了544本，平均每个班级捐书多少本？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">544 / 8</gadget>
<output>68</output>

<result>68</result>