A 64 cm long iron wire can be welded into a frame model with a length of 8 cm, a width of 4 cm, and a height of cm.
用一根64厘米长的铁丝正好可以焊接成一个长8厘米、宽4厘米、高是多少厘米的框架模型．
<gadget id="calculator">64 / 4</gadget>
<output>16</output>

<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">16 - 12</gadget>
<output>4</output>

<result>4</result>