In 2012, Uncle Zhao purchased the "China Post Greeting Card Award Postcard" and won the first prize. The bonus was 5,000 yuan. According to the tax law, he should pay personal income tax at a rate of 20%. How much personal income tax should Uncle Zhao pay?
2012年赵叔叔购买"中国邮政贺卡有奖明信片"获得一等奖，奖金是5000元，根据税法规定他应按照20%的税率缴纳个人所得税．赵叔叔应缴纳个人所得税多少元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

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

<result>1_000</result>