Alright, let's work through 72943791 times 56180123 step by step
72943791 × 56180123 = 56180123 × (72943791)
+ 56180123 × 1 that results in 56180123
+ 56180123 × 90 producing 5056211070
+ 56180123 × 700 producing 39326086100
+ 56180123 × 3000 which equals 168540369000
+ 56180123 × 40000 resulting in 2247204920000
+ 56180123 × 900000 which equals 50562110700000
+ 56180123 × 2000000 producing 112360246000000
+ 56180123 × 70000000 what gives us 3932608610000000

= 4097991150466293
