Uncle Li deposits 20,000 yuan in the bank for a period of three years. If the annual interest rate is 4.41%, how much will he get for the principal and after-tax interest when it matures?
李叔叔把20000元存入银行，定期三年，如果年利率是4.41%，到期时，他可得到本金和税后利息一共多少元？
<gadget id="calculator">4.41 / 100</gadget>
<output>0.0441</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">20_000 * 0.0441 * 3 * (4/5)</gadget>
<output>2_116.8</output>

<gadget id="calculator">20_000 + 2_116.8</gadget>
<output>22_116.8</output>

<result>22_116.8</result>