A cuboid with a square cross-section has a surface area of 210 square centimeters. After sawing off the largest cube, the surface area of the remaining part is 110 square centimeters. What is the volume of this piece of wood in cubic centimeters?
一根截面是正方形的长方体木料，表面积是210平方厘米．锯下一个最大的正方体后，余下部分的表面积是110平方厘米．原来这根木料的体积是多少立方厘米．
<gadget id="calculator">210 - 110</gadget>
<output>100</output>

<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">210 - 50</gadget>
<output>160</output>

<gadget id="calculator">160 / 4 / 5</gadget>
<output>8</output>

<gadget id="calculator">25 * 8</gadget>
<output>200</output>

<result>200</result>