the right hand side in image.
Size is 2.1M x 2.4M 20 windows each 48cm x 30cm
I'm not a pro and it took me just short of 2 1/2 hours in 35 degree heat (in the shade!)
My friend who owns the property told me that is very slow! The left hand side took me roughly the same.
I did suggest she showed me how to do it quicker but the offer was declined.
Pros and DIYers please leave time estimates, very interested to know