20 years, 1,000 TL at the beginning of each year to a bank account for the first 10 years During the period, 2,000 TL is paid at the beginning of each year. Account first 20 years 6% effective annually since 10 years after the interest rate gain value from 8% effective annual interest rate Calculate the present value of this series of payments.

I need solution for my homework i have only 1 hour for this.I need step by step solution with formulas "not with excel report.or something like this" thanks.