There are 6 students taking a math test. If 90 points are recorded as 0, their scores are recorded as +5, -3, +3, -3, +2, +2 in sequence. What is the average score of these 6 students? ．
有6个学生参加数学测验，如果把90分记作0，他们的分数依次记为+5、-3、+3、-3、+2、+2，这6个学生的平均成绩是多少分．
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">3 - 3</gadget>
<output>0</output>

<gadget id="calculator">2 + 0 + 2 + 2</gadget>
<output>6</output>

<gadget id="calculator">6 / 6</gadget>
<output>1</output>

<gadget id="calculator">1 + 90</gadget>
<output>91</output>

<result>91</result>