You have an account that requires a minimum monthly balance of $5000 if annual interest of 4 percent is to be earned monthly on its deposits. An account holder has maintained an average balance of $1000 for the first eight months of the year and $2000 for the last four months of the year. You have written an average of 15 checks a month and is not charged for these services. However, it costs the bank $0.03 to process each check. What is the average return earned (both explicit and implicit) by you the account holder over the full year if the minimum balance is reduced to $2000?

Please also explain the question and show how it was calculated.