Uncle Yang deposits 10,000 yuan in the bank for 2 years. If the annual interest rate is 4.15%, the interest tax is 5%. How much is the total amount of principal and after-tax interest he can get when it matures.
杨叔叔把10000元钱存入银行，定期2年．如果年利率是4.15%，利息税是5%．到期时他可以获得本金和税后利息一共是多少元．
<gadget id="calculator">4.15 / 100</gadget>
<output>0.0415</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">10_000 * 2 * 0.0415 * (19/20)</gadget>
<output>788.5</output>

<gadget id="calculator">10_000 + 788.5</gadget>
<output>10_788.5</output>

<result>10_788.5</result>