The heights of Xiaoming, Xiaogang, Xiaojun and Xiaobing are 120cm, 136cm, 138cm and 142cm 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、136厘米、138厘米、142厘米．他们的平均身高是多少厘米．
<gadget id="calculator">120 + 136 + 138 + 142</gadget>
<output>536</output>

<gadget id="calculator">536 / 4</gadget>
<output>134</output>

<result>134</result>