On Arbor Day, the students went to plant trees. They were divided into 4 groups with 12 people in each group. A total of 576 trees were planted. How many trees did each person plant on average?
植树节同学们去植树，分成4个小组，每个小组12人，共植了576棵树，平均每人植多少棵树？
<gadget id="calculator">4 * 12</gadget>
<output>48</output>

<gadget id="calculator">576 / 48</gadget>
<output>12</output>

<result>12</result>