Alright, let's work through 8161 times 4391 step by step
8161 × 4391 = 4391 × (8161)
+ 4391 × 1 which equals 4391
+ 4391 × 60 resulting in 263460
+ 4391 × 100 resulting in 439100
+ 4391 × 8000 yielding 35128000

= 35834951
