Xiaogang deposits 500 yuan of New Year's money in the bank for one year, with an annual interest rate of 2.25%. How much interest should he get back after maturity?
小刚把500元压岁钱存入银行，定期一年，年利率是2.25%，到期后应取回利息多少元？
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">500 * 0.0225 * 1</gadget>
<output>11.25</output>

<result>11.25</result>