Secretary Work

I need someone to go through a list of addresses, measure the roof on Google Earth Pro and subtract rooftop obstructions (air conditioning units etc.) from the square footage. You need to download Google Earth Pro (not use google maps). Open spreadsheet with list of addresses, put address into search bar, zoom in using mouse scroll wheel, (if scroll too far will go into "ground level view", if this happen simply click "exit ground level view" in upper right hand corner), hold shift & click and drag to make image perpendicular over roof, click ruler tool, click 3D polygon tab, click around perimeter of roof, write down area in square feet, click clear, scroll in more to see roof top units, do the same process with measuring roof top units as square feet of roof except every roof top unit; add an additional 16 square feet (proprietary reason), add up totals of each rooftop unit (plus the 16 square feet of each unit) and subtract it from the total square feet, then record in spreadsheet.