group of students measure their height, 2 of them are 124 cm, and the other 4 are 130 cm. What is the average height of the students in this group?
有一小组同学量身高，其中2人都是124厘米，另外4人都是130厘米．这组同学平均身高是多少厘米？
<gadget id="calculator">2 * 124</gadget>
<output>248</output>

<gadget id="calculator">130 * 4</gadget>
<output>520</output>

<gadget id="calculator">248 + 520</gadget>
<output>768</output>

<gadget id="calculator">768 / 6</gadget>
<output>128</output>

<result>128</result>