I have two simple questions:

I am trying to create a document using an excel spreadsheet format. I am trying to create a column that will contain numbers, just plain numbers as in account numbers for credit cards. When I formet the cell for a "number" it automatically changes the last number of my entry to 0 and/or it changes the format of a simple number entry to things like 4567+11 or other odd combinations. What am I doing...