This is my second day with PowerApps and I guess I'm missing something (if not to say alot 😞 )
Here comes my problem:
I have an flow which reads a datetime (LastEvent) from an excel worksheet and passes this date into an e-mail:

The e-mail contains the raw Excel datetime and therefore reads like this:
Last Run: 44074.5840277778
What I want to achieve is to format this excel-datetime which is a decimal in Excel (but for some unknown reason interpreted as String in Flow) into human readable form for the e-mail.
What I would expect is to either have a possibility to create or use an existing function, which converts an Excel-Datetime into a readable form. After all, both products (Excel and PowerApps) are Microsoft products.
1. Where do I get such a function and
2. Where Do I implement this function?
I assume that I could use this function directly on the e-mail and replace the raw "LastEvent" output from Excel with something like "convertExcelDatetime(LastEvent, 'dd.mm.yy hh:mm:ss')".
Is that correct? Or do I need to put one of the fancy actions between my "Get Last Event (Excel") and "Send an Email"? And if yes, which action would do the trick?