Xiao Ming's weight is 41 kg, Xiao Liang is 2 kg lighter than Xiao Ming, and Xiao Li is 2 kg heavier than Xiao Liang. How many kilograms does Xiao Li weigh?
小明的体重是41千克，小亮比小明轻2千克，小丽比小亮重2千克．小丽的体重是多少千克？
<gadget id="calculator">41 - 2</gadget>
<output>39</output>

<gadget id="calculator">39 + 2</gadget>
<output>41</output>

<result>41</result>