The first and second grade students donated a total of 544 books to the children in the disaster area. There are 4 classes in each grade. How many books do each class donate on average?
一、二年级同学为灾区儿童共捐书544本，每个年级有4个班，平均每班捐书多少本？
<gadget id="calculator">544 / 2 / 4</gadget>
<output>68</output>

<result>68</result>