National personal income tax regulations: Personal income tax should be paid on the part of personal monthly income exceeding 800 yuan. Of the excess, the part within 500 yuan (including 500 yuan) is paid at 5%, and the part between 500 yuan and 1500 yuan is paid at 10%. Xiaoming last month The monthly income of Xiaoming's father is 1850 yuan. How much tax did Xiaoming's father pay last month?
国家个人所得税规定：个人月收入超过800元的部分应缴纳个人所得税，超过部分中，500元以内(含500元)部分按5%缴纳，500元至1500元部分按10%缴纳…上月小明的爸爸月收入为1850元，小明的爸爸上个月交了多少元的税？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

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

<gadget id="calculator">1_850 - 800 - 500</gadget>
<output>550</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">550 * (1/10)</gadget>
<output>55</output>

<gadget id="calculator">25 + 55</gadget>
<output>80</output>

<result>80</result>