Longhua Hotel uses rectangular tiles with a length of 12 cm and a width of 9 cm to lay a solid square pattern in the hall. How many tiles are needed at least?
龙华宾馆用长12厘米，宽9厘米的长方形瓷砖在大厅里铺一个实心正方形图案，至少需要多少块这样的瓷砖？
<gadget id="calculator">2 * 2 * 9 * 2 * 2 * 9</gadget>
<output>1_296</output>

<gadget id="calculator">12 * 9</gadget>
<output>108</output>

<gadget id="calculator">1_296 / 108</gadget>
<output>12</output>

<result>12</result>