I found a similar problem online and followed the formatting and got the question wrong, how do you solve this problem?

Assume that Culver Company uses a periodic inventory system and has these account balances: Purchases $455,400; Purchase Returns and Allowances $12,200; Purchase Discounts $8,500; and Freight-In $18,100. Determine net purchases and cost of goods purchased.

Net purchases $________

Cost of goods purchased $________