In February 2008, Wang Min's family had a total income of 5,000 yuan, and deposited 40% of the income in the bank for one year, with an annual interest rate of 4.14%. How much is the actual interest after maturity? (the interest tax rate is 5%)
2008年2月，王敏家共收入5000元，把收入的40%存入银行，定期一年，年利率是4.14%，到期后实得利息多少元？(利息税的税率是5%)
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">4.14 / 100</gadget>
<output>0.0414</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">5_000 * (2/5) * 0.0414 * 1 * (19/20)</gadget>
<output>78.66</output>

<result>78.66</result>