Calculator Saa S - Copy this React, Tailwind Component to your project

Create a simple micro SaaS that functions as a calculator for the four basic operations: addition, subtraction, multiplication, and division. The system should include user authentication, new user registration, and integration with Stripe for managing charges. **Specifications:** 1. **Subscription Plans:** - **Free Plan:** Limit of 20 uses per month. - **Paid Plan:** Monthly subscription of R\$27.90 with no usage limitations. 2. **Features:** - User **registration** and **login** system. - **Integration with Stripe** to process payments and manage subscriptions. - Usage control that limits free plan users to 20 uses per month. - Intuitive interface to perform basic mathematical operations. 3. **Technologies:** - Frontend: Modern web technologies (e.g., React, Vue.js). - Backend: Node.js, Python, or another suitable language. - Database to store user information and usage (e.g., PostgreSQL, MongoDB). 4. **Security:** - Protection of sensitive data and compliance with security standards. - Use of secure protocols for financial transactions. 5. **Documentation:** - Instructions for installation, configuration, and running the system. - Documentation of the code and API, if applicable. **Objective:** Develop a functional web application that meets the above specifications, providing a smooth user experience in calculations, authentication, and subscription management.