Deposit 400 yuan in the bank, deposit and withdraw for 5 years, if the annual interest rate is 2.88%, how much after-tax interest can you get when it matures?
把400元存入银行，整存整取5年，如果年利率是2.88%，到期时可得税后利息多少元？
<gadget id="calculator">2.88 / 100</gadget>
<output>0.0288</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">400 * 0.0288 * 5 * (4/5)</gadget>
<output>46.08</output>

<result>46.08</result>