59 sq ft?
Let's find the unit rate of rolls to square feet.
662/25 = 26.48
so, each roll can cover that many square feet. Now, divide 59 by 26.48
59/26.48 = 2.2280966767371601
Since you can't have a quarter of a roll, round up to 3 rolls.
You will need 3 rolls of wallpaper to cover 59 square feet of a wall.