Alright, let's work through 42654017 times 16078126 step by step
42654017 × 16078126 = 16078126 × (42654017)
+ 16078126 × 7 which equals 112546882
+ 16078126 × 10 that results in 160781260
+ 16078126 × 000 giving us 0
+ 16078126 × 4000 producing 64312504000
+ 16078126 × 50000 what gives us 803906300000
+ 16078126 × 600000 what gives us 9646875600000
+ 16078126 × 2000000 giving us 32156252000000
+ 16078126 × 40000000 that equals 643125040000000

= 685796659732142
