Alright, let's work through 3189 times 2671 step by step
3189 × 2671 = 2671 × (3189)
+ 2671 × 9 that results in 24039
+ 2671 × 80 that results in 213680
+ 2671 × 100 that results in 267100
+ 2671 × 3000 giving us 8013000

= 8517819
