In $2023,$ the CEO of Crimson, Inc., entertains $13$ clients at a skybox in Memorial Stadium for a single athletic event during the year. Substantive business discussions occurred at various times during the event. The box cost $$13,250$ per event and seats $15$ people. $($The cost of a regular, nonluxury box seat at Memorial ranges from $$40$ to $$80.)$ Refreshments served during the event cost $$1,970.$

How much of these costs may Crimson deduct?