One of the most commonly used features in Calc,  is creating formulas to perform calculations. 
Now, I'm sure the company didn't intend to send me the information twice, but they did because I am entered into their mailing list twice. To find out how easy it is to create custom styles for use  in your spreadsheets, read the short article on how to Create a Formatting Style in Excel 2007.
This article also has links to other basic operations, such as addition or subtraction, and multiplication.
I don't know what program their mailing list is store in, but if they used Excel 2007, it would be easy to remove such duplicate data. I don't know what program their mailing list is store in, but if they used Excel 2007, it would be easy to remove such duplicate data.
The formula tells Excel, what data to use, the mathematical operation to carry out, such as division, and where to place the answer in your spreadsheets. What they should do is remove the duplicate record from the list. To find out how to create and use formulas in Calc spreadsheets read the step by step tutorial on Open Office Calc Formula Tutorial. I don't know what program their mailing list is store in, but if they used Excel 2007, it would be easy to remove such duplicate data. To find out how easy it is to copy custom styles for use in all your spreadsheets, read the short article on how to Copy a Formatting Style in Excel 2007. Now, I'm sure the company didn't intend to send me the information twice, but they did because I am entered into their mailing list twice. The only difference was that one address used my full name and the other just my first initial and last name. org,  has all the features needed to create fully functional spreadsheets. Initially, when a style is created, it is only available in one spreadsheet. For details on how to use the HLOOKUP function in your spreadsheets, including an example, read the article on the Excel HLOOKUP function.