Alright, let's work through 54349791 times 79664406 step by step
54349791 × 79664406 = 79664406 × (54349791)
+ 79664406 × 1 what gives us 79664406
+ 79664406 × 90 what gives us 7169796540
+ 79664406 × 700 which equals 55765084200
+ 79664406 × 9000 which equals 716979654000
+ 79664406 × 40000 which equals 3186576240000
+ 79664406 × 300000 producing 23899321800000
+ 79664406 × 4000000 resulting in 318657624000000
+ 79664406 × 50000000 resulting in 3983220300000000

= 4329743816239146
