Ma Li deposits 15,000 yuan in the bank for five years, with an annual interest rate of 5.50%. How much is the total interest earned after maturity.
马莉把15000元存入银行，定期五年，年利率是5.50%．到期后一共获得利息多少元．
<gadget id="calculator">5.5 / 100</gadget>
<output>0.055</output>

<gadget id="calculator">15_000 * 0.055 * 5</gadget>
<output>4_125</output>

<result>4_125</result>