Alright, let's work through 78376377 times 54074516 step by step
78376377 × 54074516 = 54074516 × (78376377)
+ 54074516 × 7 that results in 378521612
+ 54074516 × 70 resulting in 3785216120
+ 54074516 × 300 giving us 16222354800
+ 54074516 × 6000 yielding 324447096000
+ 54074516 × 70000 producing 3785216120000
+ 54074516 × 300000 that is equal 16222354800000
+ 54074516 × 8000000 that equals 432596128000000
+ 54074516 × 70000000 what gives us 3785216120000000

= 4238164652108532
