Use small rectangles with a length of 12 cm and a width of 8 cm to build a square, at least how many such rectangles are needed.
用长12厘米、宽8厘米的小长方形来拼一个正方形，至少需要多少个这样的长方形．
<gadget id="calculator">24 / 12</gadget>
<output>2</output>

<gadget id="calculator">24 / 8</gadget>
<output>3</output>

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

<result>6</result>