In an economic analysis, the economic viability of systems, system proposals, projects, companies, etc. is assessed and checked. This is done in three steps, whereby the object to be analysed is divided into parts in the first step. These are then characterized in detail. This is followed by a summary of the results to a final result. The result is a cost-benefit ratio. The increase in profitability is reflected in the increase in revenues/earnings or in the decrease in costs and expenses.