Alright, let's work through 8159554 times 76387242 step by step
8159554 × 76387242 = 76387242 × (8159554)
+ 76387242 × 4 resulting in 305548968
+ 76387242 × 50 that results in 3819362100
+ 76387242 × 500 yielding 38193621000
+ 76387242 × 9000 resulting in 687485178000
+ 76387242 × 50000 that equals 3819362100000
+ 76387242 × 100000 giving us 7638724200000
+ 76387242 × 8000000 yielding 611097936000000

= 623285826010068
