Use rectangles with length and width of 4 cm and 6 cm to form a square, at least how many.
用长宽分别为4厘米、6厘米的长方形拼成一个正方形，至少要多少个．
<gadget id="calculator">6 / 6</gadget>
<output>1</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

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

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

<result>6</result>