Uncle Zhang bought 3,000 yuan of national bonds in 2009, fixed for three years, and the annual interest rate of the three-year national bonds is 5.74%. When it expires, Uncle Zhang can get back the total amount of principal and interest.
张叔叔2009年买了3000元国债券，定期三年，三年国债的年利率是5.74%．到期时，张叔叔可以取回本金和利息共多少元．
<gadget id="calculator">5.74 / 100</gadget>
<output>0.0574</output>

<gadget id="calculator">3_000 * 0.0574 * 3</gadget>
<output>516.6</output>

<gadget id="calculator">3_000 + 516.6</gadget>
<output>3_516.6</output>

<result>3_516.6</result>