The sum of the sides of a cuboid is 80cm, the length is 10cm, the width is 7cm, and how many centimeters is the height?
一个长方体的棱长总和是80cm，其中长是10cm，宽是7cm，高是多少厘米？
<gadget id="calculator">80 / 4</gadget>
<output>20</output>

<gadget id="calculator">10 + 7</gadget>
<output>17</output>

<gadget id="calculator">20 - 17</gadget>
<output>3</output>

<result>3</result>