The experimental primary school has 6 grades, each grade has 3 classes, and each class has 42 students on average. How many students are there in this school?
实验小学有6个年级，每个年级有3个班，平均每个班有42名学生，这个学校共有多少名学生？
<gadget id="calculator">3 * 6 * 42</gadget>
<output>756</output>

<result>756</result>