Xiaoming's father's monthly salary is 1,840 yuan. According to the relevant regulations on personal income tax, the part exceeding 1,200 yuan has to pay personal income tax, so how much income tax should Xiaoming's father pay for his monthly salary.
小明爸爸的月工资是1840元，按照个人具所得税的有关规定，超过1200元部分要缴纳的个人所得税，那么小明爸爸月工资应缴纳所得税多少元．
<gadget id="calculator">1_840 - 1_200</gadget>
<output>640</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">640 * (1/20)</gadget>
<output>32</output>

<result>32</result>