Xiao Ming's height is 121 cm, Xiao Qiang's height is 135 cm, and Xiao Liang's height is 140 cm. What is their average height in cm?
小明的身高121厘米，小强的身高135厘米，小亮的身高140厘米，他们的平均身高是多少厘米．
<gadget id="calculator">121 + 135 + 140</gadget>
<output>396</output>

<gadget id="calculator">396 / 3</gadget>
<output>132</output>

<result>132</result>