cuboid with a square base, after cutting off a 3cm section, the surface area is reduced by 60cm**2, and the remaining part is just a cube. What is the volume of the original cuboid in cubic centimeters?
一个底面是正方形的长方体，截去3cm长的一段后，表面积减少了60cm**2，剩下的部分刚好是一个正方体，原长方体的体积是多少立方厘米？
<gadget id="calculator">60 / 4 / 3</gadget>
<output>5</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">5 * 5 * 8</gadget>
<output>200</output>

<result>200</result>