The sum of the sides of a cuboid is 48 cm, its length is 4 cm, width is 3 cm, and its height is cm.
一个长方体棱长之和是48cm，它的长是4cm，宽是3cm，高是多少cm．
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">12 - 7</gadget>
<output>5</output>

<result>5</result>