PLEASE SHOW WORK. I need to know the steps to practice. thank you!

1) What is the discounted value of $1560 paid at the end of each year for nine years if interest is 6% compounded quarterly?

2)You have been offered a two-year salary deal. You can either accept $2,000,000 now or accept monthly amounts of $100,000 payable at the end of each month. If money can be invested at 5.7% compounded quarterly, evaluate each option and determine which is better for you and by how much?

3)What payment is required at the end of each month for 5 years to repay a loan of $6000 at 7% compounded semi-annually?

4)How long will it take to save $15,000 by making deposits of $90 at the end of every month into an account earning interest at 4% compounded quarterly?