After cutting off a cube with a side length of 4 cm from a cuboid, the remaining cuboid has a volume of 48 cubic centimeters. What is the longest side of the original cuboid in centimeters?
从一个长方体上截下一棱长为4厘米的正方体后，剩下的一个长方体，其体积是48立方厘米，原长方体最长的一条棱是多少厘米．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">48 / 16</gadget>
<output>3</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<result>7</result>