There are 6 male students in the first group of the second class of the sixth year. Their heights are 148 cm, 139 cm, 146 cm, 153 cm, 156 cm, and 149 cm. What is the average height in centimeters of the male students in this group?
六年二班第一组有6名男同学，他们的身高分别是148厘米、139厘米、146厘米、153厘米、156厘米、149厘米．这组男同学的平均身高是多少厘米？
<gadget id="calculator">148 + 139 + 146 + 153 + 156 + 149</gadget>
<output>891</output>

<gadget id="calculator">891 / 6</gadget>
<output>297/2 = around 148.5</output>

<result>297/2 = around 148.5</result>