How many calories does a roofing laborer burn on an average day of work.?

an average day of work consists of waking at 5 45 am, starting work at 630 which consists of carrying ladders, strriping the roof exerting upperbody strength for a an hour or two. then spending the rest of the day lugging 70 bundles of shingles up ladders and moving around getting everything prepared for the roof, essentially it is 7-12 hours of continuous activity. im looking for a ballpark figure. im a 19 yearl old male 228 lbs