Uncle Li won 500,000 yuan in a sports lottery ticket. According to regulations, personal income tax is levied on the amount exceeding 10,000 yuan. The tax rate is 20%. How much personal income tax does Uncle Li need to pay?
李叔叔购买体育彩票中了50万元，按规定超过一万元的金额征收个人所得税，税率为20%，则李叔叔需要缴纳个人所得税多少元．
<gadget id="calculator">50 - 1</gadget>
<output>49</output>

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

<gadget id="calculator">49 * (1/5)</gadget>
<output>49/5 = around 9.8</output>

<result>49/5 = around 9.8</result>