Wang Hong bought 8,000 yuan of treasury bonds for three years. If the annual interest rate is 2.89%, how much yuan can he get back when it expires?
王红买了8000元国库券，定期三年，如果年利率为2.89%，到期时他一共能取回多少元钱？
<gadget id="calculator">2.89 / 100</gadget>
<output>0.0289</output>

<gadget id="calculator">8_000 * 0.0289 * 3</gadget>
<output>693.6</output>

<gadget id="calculator">693.6 + 8_000</gadget>
<output>8_693.6</output>

<result>8_693.6</result>