Know when the math changes.

The saved scenario enters eighteen hundred dollars one-time PC cost and three hundred forty monthly subscription cost. Dividing gives about five point two nine months, displayed as five point three and exported as five point two nine. Bars share fifteen hundredths of a pixel per dollar and compare the eighteen hundred initial cost with five months of subscriptions at seventeen hundred. The arithmetic excludes power, maintenance, taxes, resale and capability parity; this is not a current price check or purchase recommendation. At the entered three-year useful life, the source uses thirty six months. Three hundred forty dollars times thirty six gives twelve thousand two hundred forty subscription dollars; PC horizon cost remains the entered eighteen hundred. Bars share thirty five thousandths of a pixel per dollar. This model does not count depreciation, resale, replacement, electricity or a change in subscription service. The horizon is an assumption, not measured reliability or future pricing. If monthly subscription is hypothetically fifty dollars, the same eighteen hundred PC divides into thirty six months. With a one-year horizon of twelve months, bars share twelve pixels per month and the source calls subscription lower in that horizon. At a three-year horizon the thirty six month equality passes its less than or equal break-even test. Setup hours are displayed but not assigned a money cost by this source. A zero subscription input yields undefined crossing time, and export returns null rather than a claimed saving.