If your solution is not accepted then unfortunately your solution is not correct, sorry

The challenge has been solved recently (within the last 24 hours) so it is working as it should, and with 51 solvers and no complaints, I can be 100% certain that the challenge solution server-side is correct too.

Perhaps your calculations are a little off: remember aaaaaaa = 1 not _ _ _ _ _ _ a = 1

That is a fairly common mistake.

Hope you sort it.

sabretooth