Steve and Roslyn are retiring together

Steve and Roslyn are retiring together today and they wish to receive $40,000 of income (in the equivalent of today's dollars) at the beginning of each year from their portfolio. They assume inflation will be 4% and they expect to realize an after tax return of 8%. Based on life expectancies, they estimate their retirement period to be about 30 years. They want to know how much they should have in their fund today