In a solo competition, the judges score the players. If the highest score is removed, the average score is 8.35 points; if the lowest score is removed, the average score is 8.55 points; It is known that the difference between the highest score and the lowest score is 1.6 points. How many judges participated in the scoring?
-次独唱比赛，评委给-名选手打分，如果去掉一个最高分，平均得分8.35分，如果去掉一个最低分，平均得分8.55分；如果去掉一个最高分和一个最低分，平均得分8.4分．已知最高分与最低分相差1.6分，参加打分的评委一共有几人？
<gadget id="calculator">1.6 - 8.25</gadget>
<output>-6.65</output>

<gadget id="calculator">8.45 + (-6.65)</gadget>
<output>1.8</output>

<gadget id="calculator">0.15 + 0.05</gadget>
<output>0.2</output>

<gadget id="calculator">1.8 / 0.2</gadget>
<output>9</output>

<result>9</result>