Cut a square of paper with a side length of 6 cm into 9 identical square pieces of paper. What is the side length of each small square piece of paper in centimeters?
将一个边长为6厘米的正方形纸，剪成9张完全相同的正方形小纸片，每张正方形小纸片的边长是多少厘米．
<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<result>2</result>