Calculează pas cu pas:

(8+8×8)÷9-9×(6-6÷6)÷9+3×3×3
(8+64)÷9-9×(6-1)÷9+3×3×3
72÷9-9×5÷9+3×3×3
8-45÷9+9×3
8-5+27
3+27
30