There is a rectangular piece of paper with a length of 8 cm and a width of 6 cm. At least how many such rectangular pieces of paper are needed to form a square.
有一种长方形的纸片，长8厘米，宽6厘米，至少要多少张这样的长方形纸片才能拼成一个正方形．
<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<gadget id="calculator">24 / 6</gadget>
<output>4</output>

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

<result>12</result>