piece of rectangular paper with a length of 12cm and a width of 8cm, how many circles can be cut with it with a radius of 2cm?
一张长方形纸，长12cm，宽8cm，用它剪半径为2cm的圆，能剪几个？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">8 / 4</gadget>
<output>2</output>

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

<result>6</result>