Alright, let's work through 55112379 times 90121343 step by step
55112379 × 90121343 = 90121343 × (55112379)
+ 90121343 × 9 which equals 811092087
+ 90121343 × 70 what gives us 6308494010
+ 90121343 × 300 producing 27036402900
+ 90121343 × 2000 giving us 180242686000
+ 90121343 × 10000 what gives us 901213430000
+ 90121343 × 100000 producing 9012134300000
+ 90121343 × 5000000 producing 450606715000000
+ 90121343 × 50000000 that results in 4506067150000000

= 4966801611404997
