odds of a 7 in medium minesweeper?!

medium minesweeper is played on an 18 by 14 grid, with 40 mines. Blank means there are no mines next to it (orthogonally or diagonally), 1 means 1 mine, 2 means 2 mines, and so on.

How likely is the 7?

(Hint: Realize that 7 cannot go on the side and definitely not the corner because a side only has 5 neighbors while a corner only has 3.)

First to get the math done gets 5 tacos, 3 cookies, and 2 ice creams!