This script is used to calculate the economic useful life of a assets
-Variable P is to specify the initial cost of the asset. Example: P = 13000
-The VC list is to specify the commercial values throughout the years of study. Example: VC = [9000, 8000, 6000, 2000, 0]
-The CAO list is to specify the annual operating costs of the asset, it must be the same length as VC. Example: CAO = [2500, 2700, 3000, 3500, 4500]