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David Kindness is a Certified Public Accountant (CPA) and an expert in the fields of financial accounting, corporate and individual tax planning and preparation, and investing and retirement planning.

A full-stack scientific calculator with Next.js frontend and FastAPI backend, designed for extensibility and ready for local deployment. scientific-calculator/ ├── backend/ │ ├── main.py # FastAPI ...

No API key needed. Everything runs client-side in your browser. Every PM building AI features eventually gets asked: "What is this going to cost us?" I kept doing this calculation in spreadsheets, ...