Mr. Zhang’s one-time remuneration for manuscripts is 3,500 yuan. According to the national tax law, the part exceeding 1,600 yuan should be subject to personal income tax at a rate of 20%. How much is the personal income tax Mr. Zhang should pay?
张老师一次稿酬所得是3500元，按照国家税法规定，超过1600元的部分应按20%的税率缴纳个人所得税．张老师应缴纳的个人所得税是多少元？
<gadget id="calculator">3_500 - 1_600</gadget>
<output>1_900</output>

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

<gadget id="calculator">1_900 * (1/5)</gadget>
<output>380</output>

<result>380</result>