Teacher Li publishes an article, and the manuscript fee is 500 yuan. For this reason, she has to pay personal income tax at a rate of 3%. How much tax should she pay.
李老师发表一篇文章，稿费是500元．为此她要按3%的税率缴纳个人所得税．她应缴税多少元．
<gadget id="calculator">3 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">500 * (3/100)</gadget>
<output>15</output>

<result>15</result>