Mr. Wang deposits 20,000 yuan in the bank for two years, with an annual interest rate of 2.79%. How much is the real principal and interest after maturity? (Deduct 5% interest tax)
王老师把2万元钱存入银行，定期两年，年利率为2.79%，到期后实得本息多少元？(扣5%的利息税)
<gadget id="calculator">2 * 10_000</gadget>
<output>20_000</output>

<gadget id="calculator">2.79 / 100</gadget>
<output>0.0279</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">20_000 * 0.0279 * (19/20) * 2</gadget>
<output>1_060.2</output>

<gadget id="calculator">20_000 + 1_060.2</gadget>
<output>21_060.2</output>

<result>21_060.2</result>