What is excel spreadsheets used for?

Pretty much everything, its basically like a super larger calculator. I use it for budgets, diets, stock tracking, creating invoices, pasting a large amount of data and then sorting through to find what I am looking for easier, and in the business and especially finance world it is used for a variety of applications daily. LEARN IT! ITS EASY google HAS ALL THE ANSWERS! It's mainly used by Accountants, for all the financial stuff and money, and it's used for math calculations, graphs and charts. (wikipedia has wayyy more info!)