data storage and data analysis tools? How do you use spreadsheets to manage daily administrative tasks?

What is a spreadsheet. How do we use spreadsheets as data storage and data analysis tools? How do you use spreadsheets to manage daily administrative tasks?
Respond to Glenn
A spreadsheet is a document that has rows and columns. You can manipulate this document with either numbers or letters. You can also use formulas with this document to calculate many things like averages, sums, and multiples of. Another great thing you can do is color code cells that equal a specific number or match what you want to find. Say you have three colors you want to have, green, yellow, and red. Say if something is between 30/90% complete, you could have it color coded yellow. That way, it can be a quick color representation of how a project is going. You can also create charts/tables/and graphs to represent the data you want. This provides a great visual for your presentation, or just for your viewing preference.
I use spreadsheets daily. I use them for work and for home. The one complaint I have for using them for work, is that everyone creates a new sheet and feels it’s the greatest thing in the world. These spreadsheets get created by someone that isn’t really good at it, and the formatting is not the best. When it comes to sending to multiple companies, there is confusion as it doesn’t fit each company. Anyways, I really enjoy using spreadsheets to track my bills. I use color codes for when something is paid, the money is transferred to the proper account, or if it is still pending (this is typically blank). What I use spreadsheets for at work is tracking progress, percentages of tasks that we need to get done, reporting percentages of things that are done, statuses on vehicles for their maintenances, money spent, money remaining, retention. Literally there are unlimited things you can do with spreadsheets that make your life easier.