Alright, let's work through 3090 times 4455 step by step
3090 × 4455 = 4455 × (3090)
+ 4455 × 0 that results in 0
+ 4455 × 90 that is equal 400950
+ 4455 × 000 producing 0
+ 4455 × 3000 giving us 13365000

= 13765950
