The sum of the sides of a cuboid is 56, the length is 4 cm, the width is 2 cm, and the height is in cm.
一个长方体棱长之和是56，长4厘米，宽2厘米，高多少厘米．
<gadget id="calculator">56 / 4</gadget>
<output>14</output>

<gadget id="calculator">14 - 4 - 2</gadget>
<output>8</output>

<result>8</result>