A square billet with a side length of 12 cm is forged into a steel product with a height and a width of 4 cm. What is the length in cm?
把一个棱长为12厘米的正方体钢坯锻造成高和宽都是4厘米的长方体的钢材，长是多少厘米？
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">12 / 16</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 * 12 * (3/4)</gadget>
<output>108</output>

<result>108</result>