The Kelowna division of Windstream RVs builds the Wanderer model. The division had total revenue of $4, 785,000 and a profit of units in the $520,000 on the sale of 165 units in the first half of its financial year. Sales declined to 117 units in the second half of the year, resulting in a profit of only $136,000. Determine the selling price per unit, the total revenue in the second half, the unit variable costs, and the annual fixed costs.