Deposit 3,000 yuan in the bank for a period of 3 years, the annual interest rate is 2.70%, how much after-tax interest can you get when it matures? (Pay interest tax according to 5% of the interest).
存入银行3000元钱，定期3年，年利率是2.70%，到期时可得到税后利息多少元．(按照利息的5%缴纳利息税)．
<gadget id="calculator">2.7 / 100</gadget>
<output>0.027</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">3_000 * 0.027 * 3 * (19/20)</gadget>
<output>230.85</output>

<result>230.85</result>