Alright, let's work through 3919 times 3215 step by step
3919 × 3215 = 3215 × (3919)
+ 3215 × 9 giving us 28935
+ 3215 × 10 producing 32150
+ 3215 × 900 giving us 2893500
+ 3215 × 3000 which equals 9645000

= 12599585
