What is the value today of an investment that pays $2,100 every two years forever starting one year from today and $4,200 every two years forever starting two years from today if the APR is 8.25% compounded quarterly? That is, a $2,100 payment occurs 1 year from today, a $4,200 payment 2 years from today, a $2,100 payment 3 years from today, and so on.