There are 28 classes in the experimental primary school, and the number of each class is equal. There are 21 boys and 11 girls in class one of three years. How many students are there in the experimental primary school?
实验小学共有28个班，每班人数相等．三年一班有男生21人，女生11人，实验小学共有学生多少人？
<gadget id="calculator">21 + 11</gadget>
<output>32</output>

<gadget id="calculator">32 * 28</gadget>
<output>896</output>

<result>896</result>