Zhao Li's father deposited 20,000 yuan in the bank with a deposit period of two years and an annual interest rate of 2.79%. After two years, he would have to pay 5% interest tax when withdrawing money. How much money can Zhao Li's father get back after the maturity date?
赵丽的爸爸将20000元存入银行，存期为两年，年利率为2.79%，两年后取款时要缴纳5%的利息税，赵丽的爸爸到期后可取回多少钱？
<gadget id="calculator">2.79 / 100</gadget>
<output>0.0279</output>

<gadget id="calculator">20_000 * 0.0279 * 2</gadget>
<output>1_116</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">1_116 * (19/20)</gadget>
<output>5_301/5 = around 1_060.2</output>

<gadget id="calculator">20_000 + (5_301/5)</gadget>
<output>105_301/5 = around 21_060.2</output>

<result>105_301/5 = around 21_060.2</result>