hello,

i have in a xls-sheet to rows formated as time (hh:mm)
in each row the entries looks like

08:00 12:00 - 04:00
11:10 17:10 - 07:00
12:30 12:55 - 00:25

in the calculated column i want to have the difference between the two
timestamps

how can i do this.
thank

best regards