What can be calculated simply is 8 / 9 × (5 / 9-1 / 4) × 8 / 11 4 / 9 × (3 / 10-5 / 6 × 3 / 10) 3 / 8 × (3 / 5-1 / 3 × 3 / 10) 4/9×(3/10-5/6×3/10) 3/8×(3/5-1/3×3/10)

What can be calculated simply is 8 / 9 × (5 / 9-1 / 4) × 8 / 11 4 / 9 × (3 / 10-5 / 6 × 3 / 10) 3 / 8 × (3 / 5-1 / 3 × 3 / 10) 4/9×(3/10-5/6×3/10) 3/8×(3/5-1/3×3/10)

What can be calculated simply should be calculated simply
8/9×(5/9-1/4)×8/11
=8/9×(11/36×8/11)
=8/9×2/9
=16/81
4/9×(3/10-5/6×3/10)
=4/9×(3/10-1/4)
=4/9×1/20
=1/45
3/8×(3/5-1/3×3/10)
=3/8×(3/5-1/10)
=3/8×1/2
=3/16