Split address into separate columns

Hello there,
I´m trying to split address (which is automaticaly added by Google maps) into separate columns.
The full address is separated by commas. For example:
Lodžská 850/6, 181 00 Praha 8, Czechia.
I need to have Lodžská 850/6 in one column and 181 00 in another one. The rest of the address is not important.
I found this question about text splitting but I don´t really understand how can I use it in my case.
Can smeone please help me how to create the function?