How many tiles are needed to pave a square with a colored floor tile with a length of 18 cm and a width of 12 cm?
用一个长18厘米、宽12厘米的彩色地砖铺一个正方形，至少需要多少块？
<gadget id="calculator">3 * 2 * 3 * 2</gadget>
<output>36</output>

<gadget id="calculator">36 / 18</gadget>
<output>2</output>

<gadget id="calculator">36 / 12</gadget>
<output>3</output>

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

<result>6</result>