Xiaohong deposits 4,000 yuan in the bank, with an annual interest rate of 2.25%, and a deposit period of 3 years. She needs to pay 20% interest tax when it matures. How much interest can Xiaohong actually get back from the bank after maturity?
小红将4000元存入银行，年利率2.25%，存期3年，到期需支付20%的利息税，求到期后小红从银行实际可拿回利息多少元？
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">4_000 * 0.0225 * 3 * (4/5)</gadget>
<output>216</output>

<result>216</result>