Alright, let's work through 8159 times 3867 step by step
8159 × 3867 = 3867 × (8159)
+ 3867 × 9 that results in 34803
+ 3867 × 50 yielding 193350
+ 3867 × 100 that results in 386700
+ 3867 × 8000 yielding 30936000

= 31550853
