# Quayline — Marine Supply Pricing Workspace

> Marine-supply offer modelling with volume, discount and margin checks using minor-unit arithmetic. Synthetic frozen snapshots; no ERP, payment, live quotation or contract execution.

- Canonical URL: https://khanway.co.business/
- Methodology & Equations: https://khanway.co.business/methodology/
- Interactive Browser Runtime: https://khanway.co.business/run/
- Author & Root Entity: Mohammad Rezwan Khan, PhD (https://mrkhan.co.technology/#person)
- Ecosystem Directory: https://mklab.co.technology/
- Knowledge Graph JSON-LD: https://khanway.co.business/knowledge-graph.jsonld

## Governing Mathematical Formulation & Units
- Formula: `Net Revenue (cents) = Σ [ Quantity (L) × Unit Price (cents/L) × (10,000 − Discount_bps) / 10,000 ] × (10,000 − Rebate_bps) / 10,000; Margin (%) = (Net Revenue − Total Cost) / Net Revenue × 100`
- Units: Volume in litres (L); prices and revenue in integer USD minor units (cents); discounts and rebates in basis points (1 bps = 0.01%).

## Reproducible Worked Example
Case 1 (Bulk Marine Offer, 30-day payment terms): 1,000 L at 185 cents/L ($1.85/L) with 0 bps line discount and 0 bps rebate yields Net Revenue = 185,000 USD cents ($1,850.00). Against synthetic supply & port cost of 234,000 USD cents ($2,340.00), Profit = -49,000 USD cents (-$490.00) and Margin = -26.49%, triggering the margin-floor review warning.