Please show how to solve in simplest way with work [multi part question]

You want to save $20,000 to purchase a new car. You place $700 a month in a special savings account earning 6% interest. How long will it be before you have saved $20,000? Solution: 26.773 months or 2.2311 years You place $3.50 a day in a special savings account earning 4% interest, compounded daily. How much will you have in the account after three years? Solution: $4,071.69 You have won a contest and will receive $25,000 a year for the next 20 years. Assuming a 5% discount rate, what is the present value of your winnings? Solution: $311,555.25