A cuboid frame with a length of 10 cm, a width of 4 cm and a height of cm can be welded with a 64 cm long iron wire.
用长64cm的铁丝可焊一个长10cm，宽4cm，高多少cm的长方体框架．
<gadget id="calculator">64 / 4</gadget>
<output>16</output>

<gadget id="calculator">10 + 4</gadget>
<output>14</output>

<gadget id="calculator">16 - 14</gadget>
<output>2</output>

<result>2</result>