Tingting arranges 4 small squares with side lengths of 2 cm to form a large square. What is the perimeter of the large square?
亭亭把4个边长都是2厘米的小正方形摆成一个大的正方形，大正方形周长是多少？
<gadget id="calculator">2 * 2 * 2 * 2</gadget>
<output>16</output>

<result>16</result>