Alright, let's work through 3490 times 4457 step by step
3490 × 4457 = 4457 × (3490)
+ 4457 × 0 producing 0
+ 4457 × 90 resulting in 401130
+ 4457 × 400 what gives us 1782800
+ 4457 × 3000 that results in 13371000

= 15554930
