Alright, let's work through 8434427 times 56590521 step by step
8434427 × 56590521 = 56590521 × (8434427)
+ 56590521 × 7 what gives us 396133647
+ 56590521 × 20 that is equal 1131810420
+ 56590521 × 400 that is equal 22636208400
+ 56590521 × 4000 resulting in 226362084000
+ 56590521 × 30000 yielding 1697715630000
+ 56590521 × 400000 producing 22636208400000
+ 56590521 × 8000000 that results in 452724168000000

= 477308618266467
