George owns a cake shop, which he spends his days managing. If he were to shut it down, he could work as pastry chef earning $400 per day. He also pays $200 per day to rent the building. His expenses on staff and ingredients depend on how many cakes his shop makes per day and are given by the following table.

If George’s shop produces 8 cakes, his marginal cost is _____, and his average cost is _____.