Mr. Chen bought 5,000 yuan of national bonds, fixed for three years, with an annual interest rate of 2.89%. How much will he get in principal and interest when it matures?
陈老师买了5000元国债券，定期三年，年利率为2.89%，到期他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">5_000 * 0.0289 * 3</gadget>
<output>433.5</output>

<gadget id="calculator">433.5 + 5_000</gadget>
<output>5_433.5</output>

<result>5_433.5</result>