Wang Zhan deposited his 400 yuan lucky money in the Rural Credit Bank for one year, with an annual interest rate of 2.52%. How much yuan can Wang Zhan withdraw in total after the expiration date? (excluding interest tax)
王展把自己的400元压岁钱存入了农村信用银行，存期一年，年利率是2.52%．到期后王展一共可以取出多少元．(不计利息税)
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">400 * 0.0225 * 1</gadget>
<output>9</output>

<gadget id="calculator">400 + 9</gadget>
<output>409</output>

<result>409</result>