The rules of the gymnastics competition stipulate that after removing the highest score and the lowest score, the average score of the remaining referees will be used as the final score of the athlete. The scores of a certain athlete are as follows: After ten referees score, the average score is 8.5 points; the highest score is removed, and the average score is 8.4 points; the lowest score is removed, and the average score is 8.76 points. So what was the final score for this campaign?
体操比赛的规则规定：去掉一个最高分和一个最低分后，剩下裁判的平均分作为运动员的最后得分．某位运动员的分数情况是：十名裁判员打分后，平均分为8.5分；去掉一个最高分，平均分为8.4分；去掉一个最低分，平均分为8.76分．那么这位运动的最后得分为多少？
<gadget id="calculator">8.4 * 9</gadget>
<output>75.6</output>

<gadget id="calculator">8.76 * 9</gadget>
<output>78.84</output>

<gadget id="calculator">10 * 8.5</gadget>
<output>85</output>

<gadget id="calculator">78.84 - 85</gadget>
<output>-6.16</output>

<gadget id="calculator">75.6 + (-6.16)</gadget>
<output>69.44</output>

<gadget id="calculator">69.44 / 8</gadget>
<output>8.68</output>

<result>8.68</result>