Mom bought a 500 yuan national bond, fixed for 5 years, with an annual interest rate of 3.42%. How much can she withdraw the principal and interest at maturity?
妈妈买了500元国券，定期5年，年利率为3.42%．到期她能取出本息多少元．
<gadget id="calculator">3.42 / 100</gadget>
<output>0.0342</output>

<gadget id="calculator">500 * 0.0342 * 5</gadget>
<output>85.5</output>

<gadget id="calculator">500 + 85.5</gadget>
<output>585.5</output>

<result>585.5</result>