Do you mean you have multiplied your initial investment by 50 in less than 2 months?!?!?!?!?!?!?!?!?!?!? 
Have you finished primary school yet? In no way does your calculation make sense. Take a look at this post: https://bitcointalk.org/index.php?topic=1715214.msg19956300#msg19956300.(I'm guessing the percentage made each day was over the previous day already increased, so the ammount keeps growing and growing exponentially... Am I right?)
No.First, no need to be so harsh.
I have a masters education and a reputated carreer in a completely different field, fyi.
He said he made 4,28% EACH DAY, so my calculation was:
Invest 100 --> 104.28 at the end of the day.
Has 104.28 now --> 108.74 at the end of the second day.
And so on.
If you don't want to be helpful just don't answer.
Oh, and have you noticed? I´m a newbie.
I guess I will stop asking questions in experts' threads.
WTF?? did you read his message?? he literally told you the formula of the calculation...
based on 4.28% percentage average daily....
Day 1: invested 1btc = 1.0428
Day 2: invested 1.0428 = 1.087
Day 3: invested 1.087 = 1.133
day 4: invested 1.133 = 1.181
and keep doing that for 56 days....
people needs to go back to maths school LOL