Xiaohui deposits 10,000 yuan in the bank, deposits and withdraws in lump sum for 2 years, and the annual interest rate is 2.5%. When it matures, how much will Xiaohui get in total after tax interest and principal? (Interest tax is 20%)
小会存入银行10000元，整存整取2年，年利率为2.5%，到期时，小会可得税后利息和本金一共多少元？(利息税为20%)
<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">10_000 * 0.025 * 2</gadget>
<output>500</output>

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

<gadget id="calculator">10_000 * 0.025 * 2 * (1/5)</gadget>
<output>100</output>

<gadget id="calculator">500 - 100</gadget>
<output>400</output>

<gadget id="calculator">10_000 + 400</gadget>
<output>10_400</output>

<result>10_400</result>