Xiaohua's father bought 30,000 yuan of national construction bonds (without paying interest tax), fixed for three years, and the annual interest rate is 5.22%. How much yuan can dad get back when it expires?
小华的爸爸买了30000元国家建设债券，(不用交利息税)，定期三年，年利率是5.22%，到期时爸爸一共可取回多少元？
<gadget id="calculator">5.22 / 100</gadget>
<output>0.0522</output>

<gadget id="calculator">30_000 * 0.0522 * 3</gadget>
<output>4_698</output>

<gadget id="calculator">30_000 + 4_698</gadget>
<output>34_698</output>

<result>34_698</result>