If I borrow $3000 at 7% interest for 16 years how much interest will I pay?

If I borrow $3000 at 7% interest for 16 years how much interest will I pay?

The formula to calculate the basic interest amount is:
Interest = Principal * Rate * Time

In real life you do not have enough information to calculate the actual amount of interest that will be paid. You will need to know the number of payments, amount of payments, and the compounding of interest.