No problem, we've got 18729699 and 42607851 to multiply
18729699 × 42607851 = 42607851 × (18729699)
+ 42607851 × 9 which equals 383470659
+ 42607851 × 90 resulting in 3834706590
+ 42607851 × 600 yielding 25564710600
+ 42607851 × 9000 which equals 383470659000
+ 42607851 × 20000 giving us 852157020000
+ 42607851 × 700000 what gives us 29825495700000
+ 42607851 × 8000000 that equals 340862808000000
+ 42607851 × 10000000 producing 426078510000000

= 798032224266849
