Would anyone happen to know the formulas to this excel sheet?

You have just graduated from college, and are starting your first job at an annual salary of $100,000. Your new employer offers a 401k, and you decide to make a monthly invest 6% of your monthly salary. Use the FV function to calculate the future value of your 401k assuming the fund earns 7% annually, and you plan to retire in 26 years. Use the FV function to compute the value of your 401k at the end of 26 years assuming a contribution rate of 6%.(6% of your monthly salary) Use the FV function to compute the value of your 401k at the end of 26 years assuming a contribution rate of 7%.(7% of your monthly salary)