A cube is equally divided into two smaller cuboids, and the surface area is increased by 50 square centimeters. What is the volume of the original cube?
一个正方体平均分成两个小长方体，表面积增加50平方厘米，原来正方体的体积是多少．
<gadget id="calculator">5 * 5 * 5</gadget>
<output>125</output>

<result>125</result>