The average weight of 5 boys is 40 kg, and the average weight of 5 girls is 36 kg. What is the average weight of these 10 students in kg?
5位男生的平均体重为40千克，5位女生的平均体重为36千克，这10位同学的平均体重为多少千克．
<gadget id="calculator">40 * 5</gadget>
<output>200</output>

<gadget id="calculator">36 * 5</gadget>
<output>180</output>

<gadget id="calculator">200 + 180</gadget>
<output>380</output>

<gadget id="calculator">5 + 5</gadget>
<output>10</output>

<gadget id="calculator">380 / 10</gadget>
<output>38</output>

<result>38</result>