A cuboid teaching aid, the sum of the sides is 64 centimeters, if its length is 8 centimeters and width is 5 centimeters, what is the height in centimeters?
一个长方体教具，棱长之和是64厘米，如果它的长是8厘米，宽是5厘米，高应是多少厘米．
<gadget id="calculator">64 / 4</gadget>
<output>16</output>

<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">16 - 13</gadget>
<output>3</output>

<result>3</result>