After the Wenchuan Earthquake, the four grades of Hope Primary School donated a total of 1,200 yuan, with an average of 25 students in each grade. How much is the average donation per person?
汶川大地震后，希望小学4个年级共捐款1200元，平均每个年级有学生25人，平均每人捐款多少元？
<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">1_200 / 100</gadget>
<output>12</output>

<result>12</result>