Alright, let's work through 3103 times 5155 step by step
3103 × 5155 = 5155 × (3103)
+ 5155 × 3 producing 15465
+ 5155 × 00 giving us 0
+ 5155 × 100 what gives us 515500
+ 5155 × 3000 that equals 15465000

= 15995965
