Judges A, B, and C are scoring a certain contestant in the "Model Contest". Judges A and B score an average of 8.85 points, judges B and C score an average of 8.6 points, and judges A and C score an average of 9.25 points. What is the final average score for this contestant?
甲、乙、丙三位评委为"模特大赛"某选手打分．甲、乙两位评平均打8.85分，乙、丙两位评委平均打8.6分，甲、丙两位评委平均打9.25分，该选手最后应得的平均分是多少分？
<gadget id="calculator">8.85 * 2</gadget>
<output>17.7</output>

<gadget id="calculator">8.6 * 2</gadget>
<output>17.2</output>

<gadget id="calculator">9.25 * 2</gadget>
<output>18.5</output>

<gadget id="calculator">17.7 + 17.2 + 18.5</gadget>
<output>53.4</output>

<gadget id="calculator">53.4 / 2 / 3</gadget>
<output>8.9</output>

<result>8.9</result>