Alright, let's work through 1019 times 3917 step by step
1019 × 3917 = 3917 × (1019)
+ 3917 × 9 which equals 35253
+ 3917 × 10 resulting in 39170
+ 3917 × 000 that results in 0
+ 3917 × 1000 that results in 3917000

= 3991423
