If a cuboid with a side length of 5 cm is cut off, the volume of the remaining cuboid is 75 cubic centimeters, what is the longest side of the original cuboid in centimeters?
一个长方体截去一个棱长为5厘米的正方体后，所剩下的长方体的体积是75立方厘米，则原长方体的最长的棱是多少厘米．
<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">75 / 25</gadget>
<output>3</output>

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

<result>8</result>