Summation similar to Excel

excel provided running total when moving curser over multiple numbers and holding down some key, how to do the same with Libre?

In Calc the totals appear on the Status Bar. If not visible, you can turn on the status bar from the menu View->Status Bar.

In the Image you can see the three items selected and the Count, Max and Sum for the selected items. What is displayed may be changed by a right mouse click of that status bar area and selecting what is wanted from the popup.

Great, I appreciate the help and quick response!!