Wang Hong bought 1,000 yuan of national construction bonds with a period of 3 years. If the annual interest rate is 2.9%, how much will he get in total of principal and interest when it matures?
王宏买了3年期的国家建设债券1000元，如果年利率为2.9%，到期时他可获本金和利息共多少元．
<gadget id="calculator">2.9 / 100</gadget>
<output>0.029</output>

<gadget id="calculator">1_000 * 0.029 * 3</gadget>
<output>87</output>

<gadget id="calculator">1_000 + 87</gadget>
<output>1_087</output>

<result>1_087</result>