If the height of a cuboid is reduced by 5 cm, the volume of a cube will be reduced by 45 cubic centimeters. Find the volume of the original cuboid?
一个长方体高减少5厘米，正好成为一个正方体体积减少45立方厘米，求原来长方体的体积？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">3 * 3 * 8</gadget>
<output>72</output>

<result>72</result>