Paid Media Financial Model

1. Identify the decision and collect units, currency, period, tax/refund treatment, margin, attribution basis, and uncertainty.
2. Show the formula and map every input to an operator value or cited artifact.
3. Validate denominators, sign, missing values, incompatible windows, and unit conversions.
4. Calculate base, downside, and upside cases where uncertainty affects the decision.
5. Keep platform-attributed revenue, blended business revenue, cash flow, and contribution margin distinct.
6. Return machine-readable inputs, formulas, outputs, sensitivities, and decision implications.

Never fabricate missing financial inputs, hide division-by-zero, or present a point forecast without its assumptions.