Question

2:1/4+((1 1/2+2 2/3):3 3/4-2/3):8 8/9

Answer 1

2×4+(3/2+8/3):15/4-2/3):80/9
8+(9+16/6×4/15-2/3)×9/80
8+(25/6×4/15-2/3)×9/80
8+(5/3×2/3-2/3)×9/80
8+(10/9-2/3)×9/80
8+10-6/9×9/80
8+4/9×9/80
8+1/20
160+1/20
161/20=8целых1/20