How would supermarkets use spreadsheets

How would supermarkets use spreadsheets?

Modern supermarkets have computer systems that crunch the numbers everywhere from ordering the products to point of sale systems built into their scanner equipped cash registers. Some are real-time systems where management can view sales minute-by-minute. Those systems are capable of categorizing products and sales in principle like a spread sheet would do it but I seriously doubt you will see anybody in a supermarket entering data in a spreadsheet. Products and money flow through supermarkets too quickly to keep up with the flow of data using a spreadsheet.