steel billet with a side length of 8 decimeters is forged into a square steel with a height of 4 decimeters. What is the area of the bottom of this square steel?
把一块棱长为8分米架的钢坯锻造成一块髙为4分米的方钢，这块方钢底面积是多少．
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">8 * 8 * 2</gadget>
<output>128</output>

<result>128</result>