You have just received a windfall from an investment you made in a$$ friend's business. He will be paying you $ $34$ comma $867$$$34,867$ at the end of this$$ year, $ $69$ comma $734$$$69,734$ at the end of the following$$ year, and $ $104$ comma $601$$$104,601$ at the end of the year after that$($three years from$$ today$).$ The interest rate is $3\mathrm{.}6\%3\mathrm{.}6\%$ per year.

a$.$ What is the present value of your$$ windfall?

b$.$ What is the future value of your windfall in three years$($on the date of the last$$ payment$)?$