A 168 cm iron wire is welded into a cuboid teaching aid, which is 20 cm long and 12 cm wide. What is its height in cm?
用一根168厘米的铁丝，焊接成一个长方体教具，长20厘米，宽12厘米，它的高是多少厘米？
<gadget id="calculator">168 / 4</gadget>
<output>42</output>

<gadget id="calculator">20 + 12</gadget>
<output>32</output>

<gadget id="calculator">42 - 32</gadget>
<output>10</output>

<result>10</result>