If RRSP contributions of $4830.02 at the end of every six months are projected to generate a plan worth $680,000 in 25 years, what nominal rate compounded semi-annually and effective rates of return were assumed in the forecast? (Do not round intermediate calculations and round your final answers to 2 decimal places.)

I need the full steps including the graphical calcuation or any method,

Nominal rate of return	%
Effective rate of return	%