The document discusses how to use basic arithmetic operators like addition, subtraction, multiplication, and division to create formulas in Excel. It explains that cells are identified by their column letter and row number intersection, and that formulas use cell references and arithmetic operators to perform calculations on the data in those cells. As an example, it shows how to use the SUM function to add the values in a range of cells by writing the formula =SUM(B4:B7) to total the numbers in cells B4 through B7.