The sum of the lengths of the sides of a cuboid is 36cm, its length is 4cm, its width is 3cm, and its height is in cm.
一个长方体的棱长总和是36cm，它的长是4cm，宽是3cm，高是多少cm．
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

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

<gadget id="calculator">9 - 7</gadget>
<output>2</output>

<result>2</result>