Xiao Ming's father received a labor fee of 3,000 yuan. Among them, 800 yuan is tax-free, and the rest is taxed at a rate of 20%. How much tax will be paid for this service fee?
小明的爸爸得到一笔3000元劳务费．其中800元是免税的，其余部分按20%的税率缴税，这笔劳务费一共要缴纳税款多少元？
<gadget id="calculator">3_000 - 800</gadget>
<output>2_200</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2_200 * (1/5)</gadget>
<output>440</output>

<result>440</result>