先看看示例
作者提供的示例，实际效果取决于你的输入和使用工具。
输入
按季度广告支出与转化数据，计算各渠道 CPA 与 ROAS，并给出盈亏平衡 CPA 与 LTV:CAC 比值。
输出
预期交付：可机读的输入、公式、输出、敏感性分析与决策含义，含基准、下行与上行三种情形。（编辑说明，非实际运行结果）
方法说明
--- name: ads-math description: "Calculate and model paid-media CPA, CPL, CPC, CPM, ROAS, MER, break-even targets, contribution margin, LTV:CAC, impression-share opportunity, budgets, forecasts, and experiment economics. Use for PPC math, ad calculator, break-even analysis, ROAS calculator, CPA calculator, budget forecast, LTV CAC, or MER." --- # 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.