has incorrect math. The first part is correct with following expression
1-((1-<YourSize>/<NetSpace>)^4608)=Daily Win Chance One Block
I do not understand why there is attempt to use different formula to calculate probability to win after 5 days. The same formula MUST be used to calculate probability to win at least once.
So the correct formula is
1-((1-<YourSize>/<NetSpace>)^(4608*5) )= Win Chance One Block at least once during 5 days.
the right value is 4608*5 since we have this amount of attempts over 5 days.