Can you please show how to calculate the ATC? Why is ATC $233 price and 208 quantity?

The graph shows the demand curve, marginal revenue curve, and marginal Price and cost (dollars per canoe) + cost curve of Whitewater, Inc., a producer of canoes in monopolistic competition. 720- MC 660- Draw a point at the firm's the profit-maximizing price and quantity. Label it 1. 600- Draw an arrow that shows Whitewater's markup. 540- Draw the average total cost curve such that Whitewater does not have 480- 450 excess capacity. Label it. ATE 420- A Draw a point at the intersection of the ATC curve and the MC curve. Label it 360- 2. 300- D 180- 2 Whitewater's markup is $ 150 a canoe. 120- 60- O - :208:250 MR 100 200 300 400 500 Quantity (canoes per week)