Teacher Li deposited 20,000 yuan in the bank for three years, with an annual interest rate of 4.1%. How much interest can Mr. Li get when it expires?
李老师把2万元钱存入银行，定期三年，年利率是4.1%．到期时李老师可获得利息多少元．
<gadget id="calculator">2 * 10_000</gadget>
<output>20_000</output>

<gadget id="calculator">4.1 / 100</gadget>
<output>0.041</output>

<gadget id="calculator">20_000 * 0.041 * 3</gadget>
<output>2_460</output>

<result>2_460</result>