The weights of the four students are 34kg, 45kg, 33kg, and 44kg respectively. What is the average weight of the four students in kg?
四个同学的体重分别是34kg，45kg，33kg，44kg．这四个学生的平均体重是多少kg．
<gadget id="calculator">34 + 45 + 33 + 44</gadget>
<output>156</output>

<gadget id="calculator">156 / 4</gadget>
<output>39</output>

<result>39</result>