You can open the image icon and post that address straight in. Press enter and your pic will magically appear on the forum.
What I inderstand by this is that
I = 800 units produced per day
H = 8 hours worked by each worker per day
w= 12 workers
Productivity = 800/(6*12) = 11.111 products produced per worker per hour. (to the nearest thousandths of a product.)