Ok, no I want the formula 😅
Do you mind sharing it? 

 Do you want a link to that google sheets document? 

 That would work yes :)  

 https://docs.google.com/spreadsheets/d/13ZTl7Tve4st6ke7wmmpVX6j8tLV6X_F8pjKVoiHjUyE/edit?usp=drivesdk