Cut a circle with a radius of 1 cm from a square colored paper with a side length of 6 cm. How many circles can be cut at most?
在边长是6厘米的正方形彩纸中剪半径是1厘米的圆，最多可以剪多少个个．
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>