Mr. Wang bought tickets for the first grade children, and spent a total of 210 yuan, 5 yuan per ticket. How many people are there in the first grade?
王老师为一年级的小朋友买票，一共花了210元，每张票5元，一年级一共有多少人？
<gadget id="calculator">210 / 5</gadget>
<output>42</output>

<result>42</result>