For a square, if its opposite sides are shortened by 16 centimeters, its area is reduced by 512 square centimeters. What is the perimeter of the original square?
一个正方形，将它一组对边缩短16厘米，它的面积减小512平方厘米，原正方形周长是多少？
<gadget id="calculator">512 / 16</gadget>
<output>32</output>

<gadget id="calculator">32 * 4</gadget>
<output>128</output>

<result>128</result>