To set an ordering and inventory management policy, the owner of a small household appliances store in Florya examines the demand behavior of his customers. He finds that $$uring a typical week the probability that customers demand $1$ refrigerator is $1/5,$ the probability that the customers demand $2$ refrigerators is $2/5,$ the probability that the customers demand $3$ refrigerators is $1/5,$ and the probability that the customers demand $4$ refrigerators is $1/5.$ To satisfy the customer demands he thinks of ordering enough refrigerators to bring next weeks's beginning inventory to $3$ units if the ending inventory is less than or equal to l unit. In addition, he lists the following costs for this management policy: It costs $3000$ TL to order a refrigerator and $300$ TL to hold a refrigerator in inventory for a month. Also, for each of the demand that cannot be satisfied, a shortage cost which follows a normal distribution with mean $1200$ TL and standard deviation $200$ TL occurs. If he follows this policy, what is the average weekly ordering and inventory management cost for this.