need help with excel formulas

Mortgage Amortization Complete the loan amortization schedule for a Mortgage that will be repaid over 360 months and answer the following questions (The details about the loan are shown below): Correct Answers 1. What is your monthly payment? 2. What is the total $ amount of payments made over the life of the loan Enter Answers Here. 3. How many months will it take to pay off the loan if you pay an extra $323.81 per month? Note: Enter the month when the whole principal is paid off. Also, remember to show the amortization table for the original payment before you submit. Payment Beginning Payment Amount Interest Paid Principle Paid Ending Balance No. Balance Amount Loan Input Data Principal Amount $590,000.00 Annual Interest Rate 6.90% Periods Per Year 12 360 Total Number of Payments Percentage Rate Per Period Extra Payment per month $323.81 1 2 3 4 5 6 7