Individual tax regulations: 5% income tax should be paid on the portion between 800 and 2,000 yuan, 10% income tax should be paid on the portion between 2,000 yuan and 5,000 yuan, and 20% income tax should be paid on the portion between 5,000 and 20,000 yuan. How much is the tax?
个税规定：800至2000元部分应缴纳5%所得税，2000元至5000元部分应缴纳10%所得税，5000至20000部分应缴纳20%所得税，某月李帅傅工资为3850元，李师傅应纳税多少元？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1_200 * (1/20)</gadget>
<output>60</output>

<gadget id="calculator">3_850 - 800</gadget>
<output>3_050</output>

<gadget id="calculator">3_050 - 2_000</gadget>
<output>1_050</output>

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

<gadget id="calculator">1_050 * (1/10)</gadget>
<output>105</output>

<gadget id="calculator">60 + 105</gadget>
<output>165</output>

<result>165</result>