Xiao Ming's father published an article of about 50,000 words, and the manuscript fee was 0.1 yuan per word. According to the regulations, 20% of the personal income tax should be paid on the part exceeding 800 yuan. How much can Xiaoming's father actually get for the manuscript fee?
小明的爸爸发表了一篇约5万字的文章，稿费是每个字0.1元，按规定超过800元的部分应缴纳20%的个人所得税，小明的爸爸实际大约可以得到稿费多少元？
<gadget id="calculator">0.1 * 50_000</gadget>
<output>5_000</output>

<gadget id="calculator">5_000 - 800</gadget>
<output>4_200</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">4_200 * (1/5)</gadget>
<output>840</output>

<gadget id="calculator">5_000 - 840</gadget>
<output>4_160</output>

<result>4_160</result>