Am I measuring and pricing correctly? I'm not a huge company and I honestly dont seal much at all. Most of my work is lawn care sealing is on the side. So the question is. To make an estimate you would calculate the length and width and multiply by the amount you want to make per sq foot? Right? So lengthx width x say .12/sq foot.... Am I doing this right? Cause if I am I need to start sealing MORE!!!!