Walnut Company has forecast sales for the next three months as follows: July $4,100$ units, August $6,100$ units, and September $7,600$ units. Walnut's ending finished goods inventory policy is $40\%$ of the next month's sales. July $1$ inventory is projected to be $1,600$ units. Selling and administrative costs are budgeted to be $$16,000$ per month plus $$5$ per unit sold. What are the budgeted selling and administrative expenses for September?