The annual interest rate of regular one-year savings is 2.25%. Xiaogang deposits 800 yuan of lucky money for one year. After the maturity, how much interest can he get?
定期一年的储蓄的年利率是2.25%，小刚把800元压岁钱存定期一年，到期后，可以得到利息多少元．
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">800 * 0.0225 * 1</gadget>
<output>18</output>

<result>18</result>