Alright, let's work through 78751378 times 19082732 step by step
78751378 × 19082732 = 19082732 × (78751378)
+ 19082732 × 8 that is equal 152661856
+ 19082732 × 70 that is equal 1335791240
+ 19082732 × 300 which equals 5724819600
+ 19082732 × 1000 yielding 19082732000
+ 19082732 × 50000 which equals 954136600000
+ 19082732 × 700000 resulting in 13357912400000
+ 19082732 × 8000000 resulting in 152661856000000
+ 19082732 × 70000000 producing 1335791240000000

= 1502791441004696
