A Florida lottery machine and printer at Store #$8302$ operates $360$ days a year. If the machine does not work and breaks down, it costs the Florida Lottery Commission $$2,140$ per day. If store employees are trained to perform local tests on the machine each day plus the costs of machine repairpersons, these preventive maintenance costs average $$840$ per day. If preventive maintenance is performed daily, the probability the equipment fails is zero. The probability of store lottery machine breakdown is as follows.