Alright, let's work through 19387758 times 19776479 step by step
19387758 × 19776479 = 19776479 × (19387758)
+ 19776479 × 8 which equals 158211832
+ 19776479 × 50 resulting in 988823950
+ 19776479 × 700 giving us 13843535300
+ 19776479 × 7000 producing 138435353000
+ 19776479 × 80000 that is equal 1582118320000
+ 19776479 × 300000 that results in 5932943700000
+ 19776479 × 9000000 what gives us 177988311000000
+ 19776479 × 10000000 what gives us 197764790000000

= 383421588944082
