A writer’s remuneration for writing a book is 30,000 yuan. According to regulations, the portion after 3,000 yuan is subject to personal income tax at 20%. How much should the writer pay?
某作家写一本书的稿酬是3万元，按规定，3000元后的部分要按20%缴纳个人所得税，该作家应缴纳多少元？
<gadget id="calculator">3 * 10_000</gadget>
<output>30_000</output>

<gadget id="calculator">30_000 - 3_000</gadget>
<output>27_000</output>

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

<gadget id="calculator">27_000 * (1/5)</gadget>
<output>5_400</output>

<result>5_400</result>