needing a browser addon to make a math calculation

Hola Julio Cesar, por favor dame los datos que necesites que tenga la calculadora, o si debe leer los datos de un elemento de una página web. Saludos. Leo.-

✤✤✤ Chrome Extension Developer✤✤✤ I can do this task I have excellent knowledge on Google Chrome extension api, policies and debugging skills. I have excellent knowledge on web technologies. Javascript, PHP, HTML, CSS,Angular, MySQL based on 7+ years' rich experiences. I can promise the high-quality and fast delivery and clear communication with smart and loyal-working. Any time my pleasure to hear from you. Best regards.

Hello I'm interested to this job. I can make your add on easily. I've experiments about add on and web development.

Sir/Madam, Good day! I've been teaching math virtually for more than 7 years. I can help you on this. Please contact me now. Thank you!