Mom deposits the balance of 3,000 yuan in the bank for one year, with an annual interest rate of 3.5%. After the maturity date, if the mother goes to the bank to withdraw the money, she should pay 20% interest tax. How much will the mother get back after paying the tax?
妈妈把结余的3000元存入银行，定期一年，年利率是3.5%．到期后，妈妈到银行去取钱，应缴纳20%的利息税，纳税后妈妈取回本息共多少元？
<gadget id="calculator">3_000 * 0.035 * 1 * 0.8</gadget>
<output>84</output>

<gadget id="calculator">3_000 + 84</gadget>
<output>3_084</output>

<result>3_084</result>