Aunt Wang bought 1,000 yuan of national construction bonds, fixed for 3 years, if the annual interest rate is 2.89%, how much interest will she actually get when it matures?
王阿姨买了1000元国家建设债券，定期3年，如果年利率是2.89%，到期时她实得利息多少元？
<gadget id="calculator">2.89 / 100</gadget>
<output>0.0289</output>

<gadget id="calculator">1_000 * 0.0289 * 3</gadget>
<output>86.7</output>

<result>86.7</result>