A 56cm long iron wire can be used to form a cuboid teaching aid with a length of 6cm, a width of 5cm, and a height of cm.
用一根长56cm的铁丝，恰好可以悍成一个长6cm，宽5cm，高为多少cm的长方体教具．
<gadget id="calculator">56 / 4</gadget>
<output>14</output>

<gadget id="calculator">14 - 6 - 5</gadget>
<output>3</output>

<result>3</result>