Alright, let's work through 54122684 times 77091111 step by step
54122684 × 77091111 = 77091111 × (54122684)
+ 77091111 × 4 resulting in 308364444
+ 77091111 × 80 that equals 6167288880
+ 77091111 × 600 resulting in 46254666600
+ 77091111 × 2000 what gives us 154182222000
+ 77091111 × 20000 yielding 1541822220000
+ 77091111 × 100000 producing 7709111100000
+ 77091111 × 4000000 what gives us 308364444000000
+ 77091111 × 50000000 yielding 3854555550000000

= 4172377839861924
