Congcong is 146cm tall, Mingming is 142cm tall, Jianjian is 148cm tall, and Kangkang is 140cm tall. What is their average height in centimeters?
聪聪身高146厘米，明明身高142厘米，健健身高148厘米，康康身高140厘米．他们的平均身高是多少厘米？
<gadget id="calculator">146 + 142 + 148 + 140</gadget>
<output>576</output>

<gadget id="calculator">576 / 4</gadget>
<output>144</output>

<result>144</result>