The sixth grade students participated in Ping An Insurance, and they paid a total of 22,500 yuan in insurance premiums to Ping An Insurance Company. If the insurance amount per person is 15,000 yuan, and the insurance premium rate is 0.1%, how many students are there in this sixth grade?
六年级的学生参加了平安保险，他们向平安保险公司共交纳22500元保险费，如果每人保险金额都是15000元，保险费率是0.1%，求这个六年级共有学生多少人？
<gadget id="calculator">0.1 / 100</gadget>
<output>0.001</output>

<gadget id="calculator">15_000 * 0.001</gadget>
<output>15</output>

<gadget id="calculator">22_500 / 15</gadget>
<output>1_500</output>

<result>1_500</result>