My mother’s monthly salary is 2,000 yuan. If my mother deposits half a year’s salary in the bank on a regular basis for one year, and if the annual interest rate is 2.89%, how much after-tax interest will she get when it expires? (The interest on deposits is taxed at a rate of 5%)
妈妈每月工资2000元，如果妈妈把半年的工资全部存入银行，定期一年，如果年利率是2.89%，到期她可获税后利息一共多少元？(存款的利息要按5%的税率纳税)
<gadget id="calculator">2_000 * 6</gadget>
<output>12_000</output>

<gadget id="calculator">2.89 / 100</gadget>
<output>0.0289</output>

<gadget id="calculator">12_000 * 0.0289 * 1</gadget>
<output>346.8</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">346.8 * (19/20)</gadget>
<output>329.46</output>

<result>329.46</result>