There are 540 students in the first to third grades of Hongxing Primary School, and each grade has 3 classes. How many people are there on average in each class?
红星小学一至三年级共540人，每个年级3个班，平均每个班多少人？
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">540 / 9</gadget>
<output>60</output>

<result>60</result>