812-4×[6×(61-3600:12:30)]:9=?

Răspuns :

812 -4 × [6×(61 - 3600 :12 :30 )]:9
812 -4 × [6× (61 -300 :30 )]:9
812 -4 × [6× (61 -10 )]:9
812 -4 × (6×51 ):9
812-4 ×306 :9
812 -4 × 34
812 -136
676