# CodeASystem Knowledge Base & Guides

- **URL:** https://codeasystem.com/blog/
- **Description:** In-depth engineering guides, mathematical formulas, and unit economics analyses.
- **Total Guides:** 10

## Categories

### [Finance & Mortgages](https://codeasystem.com/blog/finance/) (1 guides)
In-depth financial guides breaking down mortgage calculations, loan amortization mechanics, compound interest formulas, and debt payoff strategies with real mathematical examples.

### [Developer & AI Systems](https://codeasystem.com/blog/developer/) (1 guides)
Technical deep dives into estimating AI token consumption, API pricing models, cloud bandwidth economics, and system architecture formulas.

### [Business & SaaS](https://codeasystem.com/blog/business/) (8 guides)
Comprehensive business guides on calculating gross and net margins, SaaS rule of 40, customer acquisition costs, and break-even revenue points.

## All Guides

- [How to Calculate Mortgage Amortization: Formulas, Schedules & Examples](https://codeasystem.com/blog/finance/how-to-calculate-mortgage-amortization/) (finance, 2026-08-30)
- [How to Accurately Estimate LLM API Token Costs for Production](https://codeasystem.com/blog/developer/how-to-estimate-llm-token-costs/) (developer, 2026-08-30)
- [How to Calculate MRR: Formula, Components & Worked Examples](https://codeasystem.com/blog/business/how-to-calculate-mrr/) (business, 2026-08-31)
- [How to Calculate Churn Rate: Formula, Types & Examples](https://codeasystem.com/blog/business/how-to-calculate-churn-rate/) (business, 2026-08-31)
- [How to Calculate Customer Acquisition Cost (CAC): Formula & Examples](https://codeasystem.com/blog/business/how-to-calculate-cac/) (business, 2026-08-31)
- [How to Calculate Customer Lifetime Value (CLV) for SaaS](https://codeasystem.com/blog/business/how-to-calculate-clv-saas/) (business, 2026-08-31)
- [How to Calculate Break-Even Point: Formula, Units & Revenue](https://codeasystem.com/blog/business/how-to-calculate-break-even/) (business, 2026-08-31)
- [How to Calculate Startup Runway: Burn Rate & Cash Runway Formula](https://codeasystem.com/blog/business/how-to-calculate-startup-runway/) (business, 2026-08-31)
- [LTV:CAC Ratio Explained: Formula, Benchmarks & Examples](https://codeasystem.com/blog/business/ltv-to-cac-ratio-explained/) (business, 2026-08-31)
- [How to Calculate Profit Margin: Gross Margin, Markup & Examples](https://codeasystem.com/blog/business/how-to-calculate-profit-margin/) (business, 2026-08-31)