Question

 (2121*23-218-82)*6-117-1391= 289390

Answer 1

1) 2121*23 =48783
2) 48783- 218 -82 = 48483
3) 48483* 6 = 290898
4) 290898 -117-1391 = 289390
   289390 = 289390

Answer 2

1) 2121*23=48783
2)48783-218=48565
3)48565-82=48483
4)48483*6=290898
5)290898-117=290781
6)290781-1391=289390