Mom has deposited 5,000 yuan in the bank for three years, with an annual interest rate of 5.2%. How much interest will mother get when it expires?
妈妈在银行存了5000元，定期三年，年利率是5.2%，到期时，妈妈可得到利息多少元？
<gadget id="calculator">5.2 / 100</gadget>
<output>0.052</output>

<gadget id="calculator">5_000 * 0.052 * 3</gadget>
<output>780</output>

<result>780</result>