my country's tax law stipulates that if a person's monthly income is more than 2,000 yuan, the part exceeding 2,000 yuan will be subject to personal income tax at a rate of 5%. Teacher Li's salary is 2,800 yuan, how much personal income tax should she pay every month.
我国税法规定，如果个人月收入在2000元以上，超过2000元的部分就要按5%的税率缴纳个人所得税．李老师的工资2800元，她每月应缴纳个人所得税多少元．
<gadget id="calculator">2_800 - 2_000</gadget>
<output>800</output>

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

<gadget id="calculator">800 * (1/20)</gadget>
<output>40</output>

<result>40</result>