The height of Xiao Ming is 140 cm, Xiao Fang is 135 cm, Xiao Li is 139 cm, Xiao Gang is 148 cm, and Xiao Qiang is 158 cm. What is their average height in centimeters?
小明的身高140厘米，小芳135厘米，小丽139厘米，小刚148厘米，小强158厘米．他们的平均身高是多少厘米？
<gadget id="calculator">140 + 135 + 139 + 148 + 158</gadget>
<output>720</output>

<gadget id="calculator">720 / 5</gadget>
<output>144</output>

<result>144</result>