Master Zhang bought sports lottery and won a bonus of 1 million yuan. After paying 20% personal income tax according to the regulations, he got a part of the bonus. He took 100,000 yuan from the bonus to support poor students. How much yuan is left?
张师傅购买体彩中了100万元奖金，按规定应交20%的个人所得税后，得到了一部分奖金，他从这些奖金中抽出10万元资助贫困生，还余下多少万元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">100 * (4/5)</gadget>
<output>80</output>

<gadget id="calculator">80 - 10</gadget>
<output>70</output>

<result>70</result>