There are 24 boys and 27 girls in Class 4 and 1. They donated 408 books to students in impoverished mountainous areas. How many books do each person donate on average?
四1班有男生24人，女生27人，他们向贫困山区的同学捐了408本书，平均每人捐书多少本？
<gadget id="calculator">24 + 27</gadget>
<output>51</output>

<gadget id="calculator">408 / 51</gadget>
<output>8</output>

<result>8</result>