The average weight of Xiaohong, Xiaohua and Xiaoming is 39 kg. Among them, Xiaohong's weight is 32 kilograms, Xiaohua's weight is 41 kilograms, how much is Xiaoming's weight in kilograms?
小红、小花和小明三人的平均体重是39千克．其中，小红的体重是32千克，小花的体重是41千克，小明的体重是多少千克？
<gadget id="calculator">39 * 3</gadget>
<output>117</output>

<gadget id="calculator">117 - 32 - 41</gadget>
<output>44</output>

<result>44</result>