Alright, let's work through 16278379 times 48015885 step by step
16278379 × 48015885 = 48015885 × (16278379)
+ 48015885 × 9 giving us 432142965
+ 48015885 × 70 what gives us 3361111950
+ 48015885 × 300 what gives us 14404765500
+ 48015885 × 8000 that equals 384127080000
+ 48015885 × 70000 what gives us 3361111950000
+ 48015885 × 200000 resulting in 9603177000000
+ 48015885 × 6000000 producing 288095310000000
+ 48015885 × 10000000 that equals 480158850000000

= 781620774050415
