Xiaoxiao has deposited 20,000 yuan in the bank for three years, with an annual interest rate of 2.70%. How much can Xiaoxiao get back when it expires?
笑笑在银行存了20000元人民币，定期三年，年利率是2.70%，到期时笑笑能取回多少元？
<gadget id="calculator">2.7 / 100</gadget>
<output>0.027</output>

<gadget id="calculator">20_000 * 0.027 * 3</gadget>
<output>1_620</output>

<gadget id="calculator">20_000 + 1_620</gadget>
<output>21_620</output>

<result>21_620</result>