(4.8x7.5x8.1) ÷ (2.4x2.5x2.7)=(2x2.4x3x2.5x3x3x0.9) ÷ (2.4x2.5x3x0.9)=2x3x3=18.
(4.8x7.5x8.1) ÷ (2.4x2.5x2.7)=(4.8÷2.4)X(7.5÷2.5)X(8.1÷2.7)=2X3X3=18