If those numbers are feet, just multiply them to get the square feet. If they are some other unit, convert them to feet first.
5220.5 sq ft
19681.81 sq ft
1076.391042 sq. ft.
32 sq. ft.
1 sq yd are in 9 sq ft
3 sq yards = 3*9 sq ft = 27 sq ft
5468 sq ft
55,000 sq ft.
43055.64 sq. ft.
3100 of them.
1120 sq ft
288 sq ft