Alright, let's work through 3055 times 4197 step by step
3055 × 4197 = 4197 × (3055)
+ 4197 × 5 that results in 20985
+ 4197 × 50 yielding 209850
+ 4197 × 000 giving us 0
+ 4197 × 3000 producing 12591000

= 12821835
