Subdivide the 8x10 grid below along the grid lines into nonoverlapping rectangles (some may be squares). Each rectangle must contain exactly one number; each number indicates how many small cells are contained within the rectangle.
4
7
12
4
6
8
7
8
15
9
From Mensa Puzzle Calendar 2018 by Fraser Simpson, Workman Publishing, New York. Puzzle for June 26.
