Teacher Li wrote a book called "Interesting Mathematics Stories" and received 4,500 yuan in royalties. According to regulations, the part of the one-time manuscript fee exceeding 800 yuan should be taxed at a rate of 14%. How much tax should Mr. Li pay?
李老师编写了一本《数学趣味故事》，获得稿费4500元．按规定，一次稿费超过800元的部分应按14%的税率纳税．李老师应缴纳税款多少元？
<gadget id="calculator">4_500 - 800</gadget>
<output>3_700</output>

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

<gadget id="calculator">3_700 * (7/50)</gadget>
<output>518</output>

<result>518</result>