Xiaofang's mother deposited 12,000 yuan in the bank for two years, with an annual interest rate of 2.5%. How much after-tax interest can be obtained after deducting 20% interest tax when it is due?
小芳的妈妈把12000元钱存入银行，定期二年，年利率是2.5%．到期时，扣除20%的利息税，可以获得税后利息多少元？
<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">12_000 * 0.025 * 2</gadget>
<output>600</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">600 * (4/5)</gadget>
<output>480</output>

<result>480</result>