Dad has 8,000 yuan, and he plans to save it in lump sum for three years, with an annual interest rate of 3.68%. How much can he withdraw the principal and after-tax interest when it matures?
爸爸有8000元钱，打算用整存整取的方式存三年，年利率为3.68%，到期时能够取出本金和税后利息共多少元？
<gadget id="calculator">3.68 / 100</gadget>
<output>0.0368</output>

<gadget id="calculator">8_000 * 0.0368 * 3</gadget>
<output>883.2</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">883.2 * (4/5)</gadget>
<output>706.56</output>

<gadget id="calculator">706.56 + 8_000</gadget>
<output>8_706.56</output>

<result>8_706.56</result>