Sometimes Excel reports will display strange results (ie: several thousand working hours/day). This is not a Time2L bug. Unfortunately, this is a peculiarity of Microsoft Office and Microsoft Windows. There are 2 different versions: one seperates decimals with commas (ie: in the German version) and one with points (ie: English and others).
There is a built-in solution in Time2L on how to fix this problem without having to change your entire system right away. Simply select to export to ".csv" format and make sure to choose the correct delimiter. If you have German Excel or Windows, then you will likely need to choose "Semicolon (;)" at this point.