There were originally 32 girls in class 5 and 2, and their average weight was 39 kg. Later, two female students were transferred away. The weights of these two female students were 42 kg and 36 kg respectively. What is the average weight of female students in this class in kilograms?
五2班原有女生32人，他们的平均体重是39千克，后来转走了两个女同学，这两个女同学的体重分别是42千克、36千克．现在这个班女同学的平均体重是多少千克．
<gadget id="calculator">39 * 32</gadget>
<output>1_248</output>

<gadget id="calculator">1_248 - 42 - 36</gadget>
<output>1_170</output>

<gadget id="calculator">32 - 2</gadget>
<output>30</output>

<gadget id="calculator">1_170 / 30</gadget>
<output>39</output>

<result>39</result>