A 2-meter-long cuboid wood has a square bottom. If this wood is cut off by 80 cm, the surface area will be reduced by 320 square centimeters. What is the original volume of this wood in cubic centimeters?
一根2米长的长方体木料，底面是一个正方形，如果把这根木料截去80厘米，那么表面积就会减少320平方厘米，原来这根木料的体积是多少立方厘米？
<gadget id="calculator">320 / 4 / 80</gadget>
<output>1</output>

<gadget id="calculator">1 * 1 * 2 * 100</gadget>
<output>200</output>

<result>200</result>