•Calculate hours between two times: =(End time - Start time) * 24 •Total minutes between two times: (24 hours * 60 minutes = 1440). =(End time - Start time) * 1440 •Total seconds between times: (24 hours * 60 minutes * 60 seconds = 86400). =(End time - Start time) * 86400 ---------------------------------------------------------------- •The Autosum Excel shortcut is very simple – just type two keys: ALT = Step 1: place the cursor below the column of numbers you want to sum (or to the left of the