The average weight of Li Xiaochun, Yufang, and Zhang Qiang is 43 kilograms, of which Li Xiaochun weighs 44 kilograms, and Yufang weighs 40 kilograms. How many kilograms does Zhang Qiang weigh?
李小春、玉芳、张强三个人的平均体重是43千克，其中李小春重44千克，、玉芳重40千克，张强的体重是多少千克？
<gadget id="calculator">43 * 3</gadget>
<output>129</output>

<gadget id="calculator">129 - 44 - 40</gadget>
<output>45</output>

<result>45</result>