Most likely I hear they have around 10 people working on them. lets say 5 an hour per person 50 for the group. Lets say 6.5 hours of hard work a day.
We all don't work full speed all the time thats 350 per day 3500 for 10 days 7000 for 20 ect.
Some well have them most well not.
May be they well put more to work on it and push out more.