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