How do I compute these on my own? Without excel.

please help!!!

1. What is the future value of $12,000 a year for 40 years at 11.5 percent interest?
2. You invested $6,500 in an account that pays 6 percent simple interest. How much more could you have earned over a 10-year period if the interest had compounded annually?
3. This morning, DJ's invested $238,000 to help fund a company expansion project planned for three years from now. How much additional money will the firm have three years from now if it can earn 4 percent rather than 3.5 percent on its savings?
4. You would like to give your daughter $75,000 towards her college education 17 years from now. How much money must you set aside today for this purpose if you can earn 8 percent on your investments?
5. Sixty years ago, your mother invested $4,500. Today, that investment is worth $430,065.11. What is the average annual rate of return she earned on this investment?
6. At 6 percent interest, how long would it take to quadruple your money?