Uncle Huang deposits 40,000 yuan in the bank with a deposit period of 3 years and an annual interest rate of 5.4%. How much after-tax interest will Uncle Huang get when it matures? (Interest tax is calculated at 5%)
黄大叔把40000元钱存入银行，存期3年，年利率为5.4%，到期时，黄大叔可得到税后利息多少元？(利息税按5%计算)
<gadget id="calculator">5.4 / 100</gadget>
<output>0.054</output>

<gadget id="calculator">40_000 * 0.054 * 3</gadget>
<output>6_480</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">6_480 * (19/20)</gadget>
<output>6_156</output>

<result>6_156</result>