Master Yang deposits 5,000 yuan in the bank with a deposit period of 1 year (1-year interest rate is 1.98%). According to the national regulations, he should pay 20% interest tax on the interest earned. What is the actual interest earned by Master Yang when it expires?
杨师傅把5000元钱存入银行，存期1年(1年期利率是1.98%)，按国家规定所得利息应缴纳20%的利息税，到期杨师傅实际所得到的利息是多少元．
<gadget id="calculator">1.98 / 100</gadget>
<output>0.0198</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">5_000 * 1 * 0.0198 * (4/5)</gadget>
<output>79.2</output>

<result>79.2</result>