Teacher Zhang published a book "Skills of Solving Mathematical Problems for Senior Grades" and received 4,000 yuan in royalties. According to regulations, the part exceeding 800 yuan should pay 14% personal income tax. How much tax should Mr. Zhang pay?
张老师出版了一本《高年级数学解题技巧》，获得稿费4000元．按规定，超出800元的部分应缴纳14%的个人所得税．张老师应缴税多少元．
<gadget id="calculator">4_000 - 800</gadget>
<output>3_200</output>

<gadget id="calculator">14 / 100</gadget>
<output>7/50 = around 0.14</output>

<gadget id="calculator">3_200 * (7/50)</gadget>
<output>448</output>

<result>448</result>