Woolworths, Coles and Kmart have hundreds of thousands of transactions daily Each involves cost price, transport component, margin, GST and six or seven other data about wrehousing, supplier, and residual stock.
If as you say each had to be entered individually, there would be hundreds of thousands working in accounts There are not.
At News Corp, activities including news stories go to a file, management has rules on who has access. A handful of people run data.
The records are already on computer in a spreadsheet format.
Couple of days work at most.
If you want to enter each firearm by typing it in; I'll lend you a 1956 Morris Minor to go out and buy a typewriter.
