There are 20 people in a group, and their math scores are: 87, 91, 94, 88, 93, 91, 89, 87, 92, 86, 90, 92, 88, 90, 91, 86, 89, 92, 95 , 88, what is the average score of this group.
某小组有20人，他们的数学成绩分别是：87、91、94、88、93、91、89、87、92、86、90、92、88、90、91、86、89、92、95、88，这个组的平均成绩是多少．
<gadget id="calculator">87 + 91 + 94 + 88 + 93 + 91 + 89 + 87 + 92 + 86 + 90 + 92 + 88 + 90 + 91 + 86 + 89 + 92 + 95 + 88</gadget>
<output>1_799</output>

<gadget id="calculator">1_799 / 20</gadget>
<output>1_799/20 = around 89.95</output>

<result>1_799/20 = around 89.95</result>