Seven referees scored a singer with an average score of 9.6. If the highest score is removed, the average score is 9.55 points, and the lowest score is removed, the average score is 9.7. If the highest score and the lowest score are removed, this What is the average score of each singer?
七名裁判员给一名歌手打分，平均分为9.6分，去掉一个最高分，平均分为9，55分，去掉一个最低分，平均分为9.7分，如果最高分和最低分都去掉，这位歌手平均为多少分．
<gadget id="calculator">9.6 * 7</gadget>
<output>67.2</output>

<gadget id="calculator">9.55 * 6</gadget>
<output>57.3</output>

<gadget id="calculator">67.2 - 57.3</gadget>
<output>9.9</output>

<gadget id="calculator">9.7 * 6</gadget>
<output>58.2</output>

<gadget id="calculator">67.2 - 58.2</gadget>
<output>9</output>

<gadget id="calculator">67.2 - 9.9 - 9</gadget>
<output>48.3</output>

<gadget id="calculator">7 - 2</gadget>
<output>5</output>

<gadget id="calculator">48.3 / 5</gadget>
<output>9.66</output>

<result>9.66</result>