Alright, let's work through 72417814 times 37778120 step by step
72417814 × 37778120 = 37778120 × (72417814)
+ 37778120 × 4 that is equal 151112480
+ 37778120 × 10 producing 377781200
+ 37778120 × 800 giving us 30222496000
+ 37778120 × 7000 that equals 264446840000
+ 37778120 × 10000 resulting in 377781200000
+ 37778120 × 400000 what gives us 15111248000000
+ 37778120 × 2000000 what gives us 75556240000000
+ 37778120 × 70000000 giving us 2644468400000000

= 2735808867429680
