After cutting a section of square steel with a length of 1.2 meters into three sections, the surface area increases by 56 square centimeters compared to the original one. What is the volume of the original section of square steel?
把一段长1.2米的方钢截成三段后，表面积比原来增加了56平方厘米，原来这段方钢的体积是多少？
<gadget id="calculator">56 / 4</gadget>
<output>14</output>

<gadget id="calculator">1.2 * 100</gadget>
<output>120</output>

<gadget id="calculator">14 * 120</gadget>
<output>1_680</output>

<result>1_680</result>