Wang Min deposits 8,000 yuan in the bank, fixed for 5 years, and the annual interest rate is 4.20%. How much will Wang Min get back the principal and interest after the maturity date this year? (Deduction of 20% interest tax)
王敏在银行存款8000元，定期5年，年利率为4.20%．今年到期后王敏取回本金和利息共多少元？(扣除20%的利息税)
<gadget id="calculator">4.2 / 100</gadget>
<output>0.042</output>

<gadget id="calculator">8_000 * 0.042 * 5</gadget>
<output>1_680</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">1_680 * (4/5)</gadget>
<output>1_344</output>

<gadget id="calculator">8_000 + 1_344</gadget>
<output>9_344</output>

<result>9_344</result>