Uncle Li uses 24cm long, 12cm wide and 6cm thick bricks to build a 1.8m long, 24cm wide and 9dm high rectangular brick wall in the yard. How many bricks are used for this wall

Uncle Li uses 24cm long, 12cm wide and 6cm thick bricks to build a 1.8m long, 24cm wide and 9dm high rectangular brick wall in the yard. How many bricks are used for this wall

1.8 m = 180 cm, 9 decimeter = 90 cm
Cuboid brick wall volume: 180 × 24 × 90 = 388800 (square centimeter)
Volume of a brick: 24 × 12 × 6 = 1728 (square centimeter)
388800 △ 1728 = 225 pieces