The interest of 500 yuan of New Year's money deposited in the bank for two years is 25.2 yuan. What is the annual interest rate?
500元的压岁钱在银行存二年的利息是25.2元，年利率是多少？
<gadget id="calculator">25.2 / 2 / 500</gadget>
<output>0.0252</output>

<result>0.0252</result>