After cutting a small cuboid from a cuboid with a length of 15 cm, the remaining part is exactly a cube with a side length of 5 cm. What is the volume of the original cuboid in cubic centimeters?
从一个长15cm的长方体上截下一段小长方体后，剩下的部分恰好是一个棱长5cm的正方体，问原来长方体的体积是多少立方厘米？
<gadget id="calculator">15 * 5 * 5</gadget>
<output>375</output>

<result>375</result>