How many tiles will I need when covering a floor which measures 12ft by 31ft. The tiles are 12 inches by 12 inches.

my steps so far: 12 x 31 = 372 now since the tiles are in inches I need to convert that 372 feet into inches.

so 372 x 12 = 4464. Now divide that total inches by the total inches of a tile. since a tile is 12 by 12 which equals 144 inches. I can divide the 4464 by 144 which equals 31 tiles. Is this correct?