Dad bought a bond of 10,000 yuan, fixed for 3 years, with an annual interest rate of 2.89%. When it matures, how many yuan can be obtained in principal and interest.
爸爸买了10000元债券，定期3年，年利率是2.89%．到期时，可获得本金和利息共多少元．
<gadget id="calculator">2.89 / 100</gadget>
<output>0.0289</output>

<gadget id="calculator">10_000 * 0.0289 * 3</gadget>
<output>867</output>

<gadget id="calculator">10_000 + 867</gadget>
<output>10_867</output>

<result>10_867</result>