Your objective is to have $$8,000,000$ in an account that earns $8\%$ annual return when you retire in $40$ years.

a$)$ If you make an equal deposit at the end of every$\_$year to the account for the next $40$ years, what is the annual deposit? Assume that your first deposit occurs at the end of next year.

b$)$ You retire after $40$ years and have $$8,000,000$ in the account as planned. You expect to live for another $25$ years after retirement. Assume that you leave the $$8,000,000$ in the account that continues to earn $8\%$ annual return. You plan to make an equal withdrawal from the account every$\_$year for the next $25$ years. The first withdrawal is made at the end of the first year after your retirement and the account balance will be depleted after you make the ${25}^{th}$ withdrawal. How much can you withdraw at the end of each year for the next $25$ years?