Wang Huan bought 5,000 yuan of three-year treasury bonds at the bank, with an annual interest rate of 5.50%. After the maturity, Wang Huan can get as much interest as he can withdraw the principal from the bank. (National bonds are exempt from interest tax)
王欢在银行买了5000元三年期国债，年利率是5.50%，到期后，王欢能从银行取出本金外，还能获得多少元利息．(国债免利息税)
<gadget id="calculator">5.5 / 100</gadget>
<output>0.055</output>

<gadget id="calculator">5_000 * 0.055 * 3</gadget>
<output>825</output>

<result>825</result>