You can sum a series of numbers in Microsoft Excel manually by typing in a simple formula, or automatically with a tool.

Microsoft Excel PivotTables turn data into meaningful information, but it's difficult to add grand total rows. Read on to learn how.

If you want to display multiple subtotals in your Microsoft Excel PivotTables, learn how to use a hard-to-find setting.

The best new tool from Microsoft Excel is undoubtedly the SCAN function. Here's how to use it to calculate running totals. Find the full guide at Spreadsheet Point.