Alright, let's work through 42090530 times 55599443 step by step
42090530 × 55599443 = 55599443 × (42090530)
+ 55599443 × 0 producing 0
+ 55599443 × 30 that equals 1667983290
+ 55599443 × 500 yielding 27799721500
+ 55599443 × 0000 giving us 0
+ 55599443 × 90000 that equals 5003949870000
+ 55599443 × 000000 yielding 0
+ 55599443 × 2000000 that equals 111198886000000
+ 55599443 × 40000000 resulting in 2223977720000000

= 2340210023574790
