please show excel calculation: all work

Janice is hoping to save $400,000 by the time she retires in 25 years. How much must Janice deposit annually at the end of each year to reach this retirement goal on December 31 , Year 25 , assuming she can earn a 8% annual rate of return on her retirement account? Bill is the owner of an ordinary annuity that will pay him $10,000 at the end of each of the next four years. This annuity has an annual rate of return of 9%. Given this information, what is the present value today of this annuity