Alright, let's work through 9135 times 8884 step by step
9135 × 8884 = 8884 × (9135)
+ 8884 × 5 that results in 44420
+ 8884 × 30 what gives us 266520
+ 8884 × 100 yielding 888400
+ 8884 × 9000 resulting in 79956000

= 81155340
