During the Spring Festival this year, Xiao Ming deposits 2,000 yuan of lucky money in the bank for a period of 3 years, with an annual interest rate of 5.40%. (Interest tax rate is 5%)
今年春节，小明把2000元压岁钱存入银行，定期3年，年利率为5.40%，到期后，小明共可取回税后利息多少元．(利息税率为5%)
<gadget id="calculator">5.4 / 100</gadget>
<output>0.054</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">2_000 * 0.054 * 3 * (19/20)</gadget>
<output>307.8</output>

<result>307.8</result>