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1,8,27,64,125,what is the next number?

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I'm sure there is an easier way to figure it out (if it is even correct), but mine made sense too...just probably the long weird way.
(It's been forever since I've been in school.)
Maybe, if you see it, you can fix it to show it the way it should be shown for your homework.
(I hope I did not confuse you more.) haha
1, 8, 27, 64, 125, 216
8-1=7, 27-8=19, 64-27=37, 125-64=61, 216-125=91
7, 19, 37, 61, 91
19-7=12, 37-19=18, 61-37=24, 91-61=30
12, 18, 24, 30
6 goes into each one: 6x2=12, 6x3=18, 6x4=24, 6x5=30
Since they went in order, I had to fill in the last numbers to fit:
6x5=30, so 61+30=91, so125+91=216.

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Yeah, I knew there was an easier way than the way I did it.
I just figured it out (after my time for edit ran out):
1x1x1= 1
2x2x2=8
3x3x3=27
4x4x4=64
5x5x5=125
6x6x6=216
My mind usually goes the harder way first...but at least I got the same answer.) haha
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Ignore the ) up there. (I forgot to delete it.)
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Do you have an answer?