Xiao Ming uses two identical small rectangular cardboards to form a large rectangle (the widths of the two small rectangular cardboards are spliced together). It is known that the perimeter of the large rectangle is 48 cm, and the length is 3 times the width. Find the perimeter of a small rectangle.
小明用两个完全一样的小长方形纸板拼成一个大长方形(两个小长方形纸板的宽拼接在一起)，已知大长方形的周长是48厘米，长是宽的3倍．求一个小长方形的周长．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">48 / 8</gadget>
<output>6</output>

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

<gadget id="calculator">6 * (3/2)</gadget>
<output>9</output>

<gadget id="calculator">6 + 9</gadget>
<output>15</output>

<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<result>30</result>