I assume that the size of the paper is 7.062 by 2.25, not 7.063 by 2025, not 7.062 by 20.25.
20 rectangles could be 20 in a row, 10 in 2 rows or 5 in 4 rows.
Assuming the rectangles don’t have to be similar in size to the paper (that is, the ratio of the length to the width of the rectangles doesn’t have to be the same as the ratio of the paper’s length and width), then we can divide the width of the paper by 4 and its length by 5 to gives us 4 rows of 5 rectangles. Divide the width by 4 and we get 2.25/4=0.5625 units. Divide the length by 5 and we get 7.062/5=1.4124 units. So we end up with 20 rectangles of size 0.5625 by 1.4124 units. (We could also divide the width by 5 and the length by 4 to get 20 rectangles of a different size.)
If we divide the width by 2 and the length by 10 we get 20 rectangles each with length=7.062/10=0.7062 and width=2.25/2=1.125. There will be 2 rows of 10 rectangles.