3.2X1.25
=1.25x8x0.4
=10x0.4
=4
2.33X0.5X4
=2.33x2
=4.66
1.5X105
=1.5x100+1.5x5
=150+7.5
=157.5
1.2X2.5+0.8X2.5
=2.5x(1.2+0.8)
=2.5x2
=5
3.2X1.25
=1.25x8x0.4
=10x0.4
=4
2.33X0.5X4
=2.33x2
=4.66
1.5X105
=1.5x100+1.5x5
=150+7.5
=157.5
1.2X2.5+0.8X2.5
=2.5x(1.2+0.8)
=2.5x2
=5