The sum of the sides of a cuboid is 104cm, the length is 9cm, the width is 7cm, and the height is cm.
一个长方体棱长之和是104cm，其中长是9cm，宽是7cm，高是多少cm．
<gadget id="calculator">104 / 4</gadget>
<output>26</output>

<gadget id="calculator">26 - 9 - 7</gadget>
<output>10</output>

<result>10</result>