In a math test, in the first group of Class 51, 3 people scored 90 points, 2 people got 92 points, 2 people got 93 points, and 1 person got 80 points. What is the average grade for this group?
在一次数学测验中，五1班第一小组中有3人得90分、2人得92分、2人得93分、1人得80分．这个小组的平均成绩是多少？
<gadget id="calculator">90 * 3</gadget>
<output>270</output>

<gadget id="calculator">92 * 2</gadget>
<output>184</output>

<gadget id="calculator">93 * 2</gadget>
<output>186</output>

<gadget id="calculator">270 + 184 + 186 + 80</gadget>
<output>720</output>

<gadget id="calculator">3 + 2 + 2 + 1</gadget>
<output>8</output>

<gadget id="calculator">720 / 8</gadget>
<output>90</output>

<result>90</result>