Uncle Zhang bought 50,000 yuan of national construction bonds, fixed for three years, with an annual interest rate of 5.22%. How much can Uncle Zhang get back after the maturity date?
张叔叔买了50000元的国家建设债券，定期三年，年利率是5.22%．到期后，张叔叔可取回多少元？
<gadget id="calculator">5.22 / 100</gadget>
<output>0.0522</output>

<gadget id="calculator">50_000 * 0.0522 * 3</gadget>
<output>7_830</output>

<gadget id="calculator">50_000 + 7_830</gadget>
<output>57_830</output>

<result>57_830</result>