bond with a face value of 1,000 yuan and a monthly interest rate of 0.23% due in three years, what is the sum of principal and interest after maturity?
一张债券，票面额为1000元，三年到期的月利率为0.23%，则到期后可得本利和为多少．
<gadget id="calculator">0.23 / 100</gadget>
<output>0.0023</output>

<gadget id="calculator">1_000 * 0.0023 * 3</gadget>
<output>6.9</output>

<gadget id="calculator">1_000 + 6.9</gadget>
<output>1_006.9</output>

<result>1_006.9</result>