Grandpa Li won 200,000 yuan in the lucky lottery, and he should pay 20% of the personal income tax according to the regulations.
李爷爷买福彩中了20万元，按规定应缴纳20%的个人所得税，李大爷实得奖金多少万元．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">20 * (1/5)</gadget>
<output>4</output>

<gadget id="calculator">20 - 4</gadget>
<output>16</output>

<result>16</result>