How do you use computer in bankig?

How do you use computer in bankig?
In banking, you would use a computer to calculate amounts of money etc. and you would keep all your details or your clients details on it.
You would use a spreadsheet to calculate different amounts of money like VAT, because a spreadsheet is like a massive powerful calculator that is easy to use.

You would use a database containing forms and tables to input, check and edit your details or your client's details. You might also have queries in the database to find people who fall into a certain category. For example you could have a query to find people who have under 5,000 in their bank account, and it will clearly list all the people who have less than 5,000