Alright, let's work through 18717189 times 68738415 step by step
18717189 × 68738415 = 68738415 × (18717189)
+ 68738415 × 9 giving us 618645735
+ 68738415 × 80 which equals 5499073200
+ 68738415 × 100 resulting in 6873841500
+ 68738415 × 7000 that equals 481168905000
+ 68738415 × 10000 what gives us 687384150000
+ 68738415 × 700000 producing 48116890500000
+ 68738415 × 8000000 producing 549907320000000
+ 68738415 × 10000000 that results in 687384150000000

= 1286589905115435
