Master Wang deposits 1,200 yuan in the bank for a period of 3 years, with an annual interest rate of 2.15%. How much after-tax interest can he get back at maturity?
王师傅将1200元存入银行，定期3年，年利率为2.15%，到期他可领回税后利息多少元？
<gadget id="calculator">2.15 / 100</gadget>
<output>0.0215</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_200 * 0.0215 * 3 * (4/5)</gadget>
<output>61.92</output>

<result>61.92</result>