Use an iron wire to weld a square frame with a side length of 6 cm. If this iron wire is used to weld a rectangular cuboid frame, what is the sum of length, width, and height in centimeters?
用一根铁丝恰好焊接成棱长6cm的正方体框架，如果用这根铁丝焊接成长方体框架，长、宽、高的和是多少厘米．
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">12 * (3/2)</gadget>
<output>18</output>

<result>18</result>