A rectangular tile with a length of 30 cm and a width of 12 cm is paved into a smallest square, and the minimum number of such tiles is required.
把一种长30厘米，宽12厘米的长方形瓷砖铺成一个最小的正方形，最少需要这种瓷砖多少块．
<gadget id="calculator">60 / 30</gadget>
<output>2</output>

<gadget id="calculator">60 / 12</gadget>
<output>5</output>

<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<result>10</result>