Xiaohua deposits 500 yuan in the bank, the annual interest rate is 4.5%, and the lump-sum deposit is withdrawn for two years. How much yuan can Xiaohua get in total when it expires. (Exemption from interest tax)
小华把500元存入银行，年利率是4.5%，整存整取二年，到期时小华一共能拿到多少元．(免收利息税)
<gadget id="calculator">4.5 / 100</gadget>
<output>0.045</output>

<gadget id="calculator">500 * 0.045 * 2</gadget>
<output>45</output>

<gadget id="calculator">500 + 45</gadget>
<output>545</output>

<result>545</result>