Problem $5-26$ Spreadsheet Problem: Number of Annuity Payments $($LG$5-10)$

You realize that you can retire when you have $$1$ million in assets. You currently have $$500,000$ in retirement assets and contribute $$540$ more each month? If your investment portfolio earns an $8$ percent annual rate of return, how long will it be until you can retire?

Note: Do not round intermediate calculations and round your final answer to $2$ decimal places.

Years