Hope Elementary School held a singing competition. The six judges scored contestants A as follows: 79 points, 78 points, 81 points, 95 points, 82 points, and 75 points. What is the average score after removing the highest score and the lowest score?
希望小学举行歌咏比赛，六名评委对A选手打分如下，79分、78分、81分、95分、82分、75分，去掉一个最高分，去掉一个最低分的平均分是多少．
<gadget id="calculator">79 + 81 + 78 + 82</gadget>
<output>320</output>

<gadget id="calculator">320 / 4</gadget>
<output>80</output>

<result>80</result>