How big is a football field in acres?

I mean American Football...

1 acre = 43,560 sq. feet
120 times 3 = 360
53 times 3 = 159 plus 1 = 160
360 times 160 = 57,600 sq. feet
I would like to point out that being a measurement of area, not length, an acre can be any shape, it doesn't have to be a square, or even a rectangle, it can be a triangle, circle, trapezoid, etc... So now all we simply must do is divide 57,600 by 43,560 to get 1.322314049586777, so a football field is roughly 1 and a third acres.

Length: 120 yards.
Width: 53 1/3 yards.