Li Qiang's father received a monthly salary of 2,100 yuan from his unit in November this year. According to the new personal income tax law, the part of the monthly personal income exceeding 1,600 yuan should be levied personal income tax at a rate of 5%. How much personal income tax should Li Qiang's father pay this month?
李强的爸爸今年11月从单位取得当月工资2100元．按照新的个人所得税法规定，每月的个人收入超过1600元的部分，应按照5%的税率征收个人所得税．李强的爸爸这个月应缴纳个人所得税多少元？
<gadget id="calculator">2_100 - 1_600</gadget>
<output>500</output>

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

<gadget id="calculator">500 * (1/20)</gadget>
<output>25</output>

<result>25</result>