The school has insured the "teacher and student safety insurance", the insurance amount is 5,000 yuan per person, calculated according to the annual insurance premium rate of 0.4%, how much is the insurance premium payable per person per year.
学校投保了"师生平安保险"，保险金额每人5000元，按每年保险费率0.4%计算，每年每人应付保险费多少元．
<gadget id="calculator">0.4 / 100</gadget>
<output>0.004</output>

<gadget id="calculator">5_000 * 0.004 * 1</gadget>
<output>20</output>

<result>20</result>