After dividing a 5-meter-long cuboid into 5 sections, the surface area increases by 128 square centimeters compared to the original. What is the volume of this log in cubic centimeters?
把一根5米长的长方体木料据成5段后，表面积比原来增加128平方厘米．这根木料的体积是多少立方厘米？
<gadget id="calculator">128 / 8</gadget>
<output>16</output>

<gadget id="calculator">5 * 100</gadget>
<output>500</output>

<gadget id="calculator">16 * 500</gadget>
<output>8_000</output>

<result>8_000</result>