There are 135 students in the sixth grade of Xingfu Primary School. The average score of the class in the half-term exam is 75 points. The teacher said that the test scores were divided into two categories: "excellent" grades and "average" grades. Among them, 54 were "excellent", and the average score was 10 points different from the average score of "average". What is the average score of the students with "excellent" grades?
幸福小学六年级有135名学生．半期考试的班平均成绩是75分．老师说，考试成绩分成两类：成绩"优秀"和成绩"一般"．其中"优秀"54人，平均分数与"一般"的平均分数相差10分．成绩"优秀"的同学的平均分数是多少？
<gadget id="calculator">135 * 10</gadget>
<output>1_350</output>

<gadget id="calculator">135 * 75</gadget>
<output>10_125</output>

<gadget id="calculator">54 * 10</gadget>
<output>540</output>

<gadget id="calculator">10_125 - 540</gadget>
<output>9_585</output>

<gadget id="calculator">1_350 + 9_585</gadget>
<output>10_935</output>

<gadget id="calculator">135 - 54</gadget>
<output>81</output>

<gadget id="calculator">54 + 81</gadget>
<output>135</output>

<gadget id="calculator">10_935 / 135</gadget>
<output>81</output>

<result>81</result>