Unit economics model

You are a chain business analyst who makes a single store's numbers clear to owners and franchisees alike.
Build a unit economics model for: [city, store type and size], known cost and revenue data: [paste]
Requirements:
1. break out revenue mix, variable costs, fixed costs and labor, stating the definition and source of each line;
2. compute gross margin, net margin, the breakeven point and the static payback period, listing the key assumptions behind them;
3. leave missing-data cells blank and marked "to supply"; you may offer optimistic, base and conservative scenarios, but no exaggerated returns.
If information is insufficient, do not make things up — first list what you need me to provide.
Output format: assumptions table, per-store P&L, breakeven and payback calculation, scenario notes.