Uncle Zhao purchased the China Welfare Lottery and won 5 million yuan. According to the tax law, he should pay personal income tax at a rate of 20%. Uncle Zhao can actually get a bonus of RMB 10,000.
赵叔叔购买中国福利彩票获奖500万元，根据税法规定他应按20%的税率缴纳个人所得税．赵叔叔实际可以获得奖金多少万元．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">500 * (1/5)</gadget>
<output>100</output>

<gadget id="calculator">500 - 100</gadget>
<output>400</output>

<result>400</result>