Xiao Li bought a five-year national construction bond worth 5,000 yuan, with an annual interest rate of 3.81%. How much is his principal and interest at maturity?
小李买了5000元5年期的国家建设债券，年利率是3.81%，到期他的本金和利息共多少钱？
<gadget id="calculator">3.81 / 100</gadget>
<output>0.0381</output>

<gadget id="calculator">5_000 * 0.0381 * 5</gadget>
<output>952.5</output>

<gadget id="calculator">5_000 + 952.5</gadget>
<output>5_952.5</output>

<result>5_952.5</result>