Alright, let's work through 3681 times 859 step by step
3681 × 859 = 859 × (3681)
+ 859 × 1 yielding 859
+ 859 × 80 that results in 68720
+ 859 × 600 that equals 515400
+ 859 × 3000 that is equal 2577000

= 3161979
