Alright, let's work through 86143063 times 37340197 step by step
86143063 × 37340197 = 37340197 × (86143063)
+ 37340197 × 3 giving us 112020591
+ 37340197 × 60 that equals 2240411820
+ 37340197 × 000 which equals 0
+ 37340197 × 3000 which equals 112020591000
+ 37340197 × 40000 that equals 1493607880000
+ 37340197 × 100000 yielding 3734019700000
+ 37340197 × 6000000 giving us 224041182000000
+ 37340197 × 80000000 resulting in 2987215760000000

= 3216598942603411
