To make a cuboid frame with a length of 6cm, a width of 4cm, and a height of 3cm, how many centimeters of iron wire are needed at least?
做一个长6cm，宽4cm，高3cm的长方体框架，至少要多少cm铁丝．
<gadget id="calculator">6 + 4 + 3</gadget>
<output>13</output>

<gadget id="calculator">13 * 4</gadget>
<output>52</output>

<result>52</result>