Xiaohua deposits 400 yuan in the bank, the annual interest rate is 4.5%, and the lump-sum deposit is withdrawn for two years.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.
小华把400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．
<gadget id="calculator">4.5 / 100</gadget>
<output>0.045</output>

<gadget id="calculator">400 * 0.045 * 2</gadget>
<output>36</output>

<result>36</result>