A professional photographer who specializes in wedding-related activities paid $45,500 for equipment that will have a $2000 salvage value after 5 years. He estimates that his costs associated with each event amount to $65 per day. If he charges $450 per day for his services, how many days per year must he be employed in order to break even at an interest rate of 9% per year? The number of days required for break even is determined to be per year