Alright, let's work through 3157 times 4786 step by step
3157 × 4786 = 4786 × (3157)
+ 4786 × 7 producing 33502
+ 4786 × 50 giving us 239300
+ 4786 × 100 producing 478600
+ 4786 × 3000 that results in 14358000

= 15109402
