A child scored 92 points in Chinese, 90 points in mathematics, and 88 points in English. What is the average score of his three subjects?
一个小朋友语文成绩是92分，数学是90分，英语是88分，他三门课的平均成绩是多少分．
<gadget id="calculator">92 + 90 + 88</gadget>
<output>270</output>

<gadget id="calculator">270 / 3</gadget>
<output>90</output>

<result>90</result>