1/3 × 4/5 × 16/9= 2 2/3 +4/9 × 1 6/9

a.) 1/3 × 4/5 × 16/9
= 1×4×16 / 3×5×9
= 64/135

b.) 2 2/3 +4/9 × 1 6/9
= 8/3 + (4/9 × 15/9)
= 8/3 + 60/81
= 216+60/81
= 276/81
= 3 33/81