After the length, width and height of a cuboid are enlarged by the same multiple, the volume is 7 times larger than the original, and the sum of the lengths of the sides is 150 cm longer than the original. What is the sum of the lengths of the sides after the enlargement of the cuboid?
一个长方体的长、宽、高都扩大相同的倍数后，体积比原来大7倍，棱长总和比原来多150cm，这个长方体扩大后棱长的总和为多少cm．
<gadget id="calculator">150 * 2</gadget>
<output>300</output>

<result>300</result>