Xiaohua deposits 500 yuan in the bank for a period of 2 years, with an annual interest rate of 2.43%. How much yuan can she withdraw from the principal and after-tax interest when it matures?
小华把500元钱存入银行，定期2年，年利率2.43%，到期时她可取本金和税后利息一共多少元？
<gadget id="calculator">2.43 / 100</gadget>
<output>0.0243</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">500 * 0.0243 * 2 * (4/5)</gadget>
<output>19.44</output>

<gadget id="calculator">500 + 19.44</gadget>
<output>519.44</output>

<result>519.44</result>