The formula for area of a rectangle is length times width.
A = L x W
5 5/8 = 4.5 x W
Hint: 1/2 yard = 3 feet divided by 2 = 1 1//2 feet
5 5/8 divided by 4.5 = 4.5 x W divided by 4.5
5 5/8 divided by 4.5 = W
Now, convert both fractions to eights, and divide.