If one takes the width of the plow or seeder one is tractoring and divide the length of the field by that width one will get the number of times the tractor goe

If one takes the width of the plow or seeder one is tractoring and divide the length of the field by that width one will get the number of times the tractor goes back and forth across the field to completely seed or plow it. If the tractor travels at constant velocity V_tractor m/s and multiplies by the width of the plow or seeder and the time in seconds the tractor took to plow or seed the field one gets the total area of the field expressed in meters^2. This can be extended to a tractor traveling at V(t) if infinitesimal units dt of area are summed. This is known as the Fundamental Theorem of Tractor Calculus and is the basis of Tractor Field Theory;)