Add Sub-lists Within Lists

I want to Divide my room are by the Total area of Windows, So i got the room area ( 19 Nos), But since there are more than one windows per room i get a sub list of window areas(19 Nos with 2 in each list) , I want to add the two window area per room to get a list with 19 Nos so i can divide with room area.

WWR For Rooms.dyn (11.1 KB)

Get the counts of window area using List.Count node and use List.Cycle,

1 Like