Xiaoming’s father’s monthly salary is 3,600 yuan. According to the relevant regulations on personal income tax, the portion exceeding 2,200 yuan is subject to personal income tax at a rate of 20%. So how much income tax should Xiaoming’s father pay on his monthly salary?
小明爸爸的月工资是3600元，按照个人所得税的有关规定，超过2200元部分，要按照20%的税率来缴纳个人所得税，那么小明爸爸月工资应缴纳所得税多少元．
<gadget id="calculator">3_600 - 2_200</gadget>
<output>1_400</output>

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

<gadget id="calculator">1_400 * (1/5)</gadget>
<output>280</output>

<result>280</result>