A square with a side length of 8 cm is divided into 4 equal smaller squares, what is the perimeter of each smaller square in cm?
一个正方形边长8厘米，把它分成4个相等的小正方形，每个小正方形的周长是多少厘米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<result>16</result>