Uncle Li bought a five-year national construction bond of 20,000 yuan, with an annual interest rate of 6.34%. How much is Uncle Li's principal and interest at the time of maturity? (National construction bonds are exempt from paying interest tax)
李叔叔购买了五年期的国家建设债券20000元，年利率是6.34%．到期时李叔叔的本金和利息共有多少元？(国家建设债券免交利息税)
<gadget id="calculator">6.34 / 100</gadget>
<output>0.0634</output>

<gadget id="calculator">20_000 * 0.0634 * 5</gadget>
<output>6_340</output>

<gadget id="calculator">6_340 + 20_000</gadget>
<output>26_340</output>

<result>26_340</result>