In March 2012, Mingming's family earned 5,000 yuan, and deposited 40% of the income in the bank for one year on a regular basis, with an annual interest rate of 4.14%. After paying the 5% interest tax when it is due, how much interest will the Mingming family get?
2012年3月，明明家收入5000元，把收入的40%存入银行，定期一年，年利率是4.14%．到期时缴纳5%的利息税后，明明家实得利息多少元？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">5_000 * (2/5)</gadget>
<output>2_000</output>

<gadget id="calculator">4.14 / 100</gadget>
<output>0.0414</output>

<gadget id="calculator">2_000 * 0.0414 * 1</gadget>
<output>82.8</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">82.8 * (19/20)</gadget>
<output>78.66</output>

<result>78.66</result>