Alright, let's work through 55139695 times 77587638 step by step
55139695 × 77587638 = 77587638 × (55139695)
+ 77587638 × 5 that is equal 387938190
+ 77587638 × 90 resulting in 6982887420
+ 77587638 × 600 that results in 46552582800
+ 77587638 × 9000 that is equal 698288742000
+ 77587638 × 30000 what gives us 2327629140000
+ 77587638 × 100000 which equals 7758763800000
+ 77587638 × 5000000 that results in 387938190000000
+ 77587638 × 50000000 that results in 3879381900000000

= 4278158695090410
