The Panyu Primary School of the High School Attached to China Normal University participated in the activity of cleaning up small advertisements in the middle of the month of "Learning from Lei Feng". The 4 classes cleaned up a total of 256 small advertisements. How many small advertisements were cleaned up on average in each class?
华师附中番禺小学在"学雷锋"月中参加了清理小广告活动，4个班共清理小广告256张，平均每个班清理小广告多少张？
<gadget id="calculator">256 / 4</gadget>
<output>64</output>

<result>64</result>