Xiaoming's father deposits 10,000 yuan in the bank for two years, with an annual interest of 2.7%, but the interest must be paid 20% of personal income tax. After the maturity, Xiaoming's family can get the total amount of principal and interest.
小明爸爸到银行存款1万元，定期为两年，年利息为2.7%，但利息必须缴纳20%的个人所得税，那么到期后，小明家可以拿到本金和利息共有多少元．
<gadget id="calculator">2.7 / 100</gadget>
<output>0.027</output>

<gadget id="calculator">10_000 * 0.027 * 2</gadget>
<output>540</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">540 * (4/5)</gadget>
<output>432</output>

<gadget id="calculator">10_000 + 432</gadget>
<output>10_432</output>

<result>10_432</result>