Teacher Zhang deposited 50,000 yuan in the bank for a period of 3 years, and planned to donate the interest to "extremely poor students" in poor areas after the expiration. If the annual interest rate is calculated at 4.25%, how much can he donate after maturity?
张老师把50000元存入银行，定期3年，准备到期后把利息捐赠给贫困地区的"特困生"．如果年利率按4.25%计算，到期后他可捐出多少元？
<gadget id="calculator">4.25 / 100</gadget>
<output>0.0425</output>

<gadget id="calculator">50_000 * 0.0425 * 3</gadget>
<output>6_375</output>

<result>6_375</result>