Wang Hua deposited 1,000 yuan of New Year's money in the bank for two years, with an annual interest rate of 4.23%. How much can he get back the principal and after-tax interest after two years? (Interest tax is paid at 5%)
王华同学把1000元压岁钱存入银行，定期两年，年利率是4.23%．两年后他能取回本金和税后利息一共多少元钱．(利息税按5%交纳)
<gadget id="calculator">4.23 / 100</gadget>
<output>0.0423</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_000 * 0.0423 * 2 * (19/20)</gadget>
<output>80.37</output>

<gadget id="calculator">1_000 + 80.37</gadget>
<output>1_080.37</output>

<result>1_080.37</result>