Cut a cuboid block into two identical cubes. The sum of the sides of the two cubes is 40 cm longer than the original cuboid. What is the volume of each cube in cubic centimeters?
把一个长方体木块，截成两段完全一样的正方体，这两个正方体的棱长之和比原长方体增加40厘米，每个正方体的体积是多少立方厘米？
<gadget id="calculator">40 / 8</gadget>
<output>5</output>

<gadget id="calculator">5 * 5 * 5</gadget>
<output>125</output>

<result>125</result>