The heights of Xiaoming, Xiaogang, Xiaojun and Xiaobing are 120cm, 126cm, 128cm and 130cm respectively. What is their average height in centimeters.
小明、小刚、小军和小兵的身高分别是120厘米、126厘米，128厘米、130厘米．他们的平均身高是多少厘米．
<gadget id="calculator">120 + 126 + 128 + 130</gadget>
<output>504</output>

<gadget id="calculator">504 / 4</gadget>
<output>126</output>

<result>126</result>