About profit calculation and inventory goods

Simply put, profit = sales revenue of similar commodities-procurement cost of similar commodities-expenses, etc.

For example, our company bought 10 product A for 300,000 yuan, bought 40 product B for 400,000 yuan, and sold 2 products A and 5 products B that month.

Unit cost of a product = 30/10 = 30,000, and carry-over cost = 3 * 2 = 60,000.

B product unit cost = 40/40 = 1 ten thousand, carry-over cost =1* 5 = 50 thousand.

Then, profit = income of products A and B-cost of products A and B-expenses, etc. (This is relatively simple)