Richard s kitchen floor measures 22 ft by 16ft. he plans on laying title down and each tile piece measures 16 inches by 16 inches. how many tiles does he need to buy

We calculate the floor area of the kitchen:
 A = (22) * (16)
 A = 352 feet ^ 2
 We consider the following conversion:
 1 foot = 12 inches.
 Applying the conversion we have:
 A = 352 * (12/1) ^ 2
 A = 50688 in ^ 2
 We calculate the area of each tile:
 A = (16) * (16)
 A = 256 in ^ 2
 Then, the number of tiles is given by:
 N = (50688) / (256)
 N = 198
 
 He needs to buy 198 tiles

What are the options