Alright, let's work through 42505648 times 84458710 step by step
42505648 × 84458710 = 84458710 × (42505648)
+ 84458710 × 8 which equals 675669680
+ 84458710 × 40 producing 3378348400
+ 84458710 × 600 yielding 50675226000
+ 84458710 × 5000 what gives us 422293550000
+ 84458710 × 00000 that results in 0
+ 84458710 × 500000 which equals 42229355000000
+ 84458710 × 2000000 that equals 168917420000000
+ 84458710 × 40000000 resulting in 3378348400000000

= 3589972197794080
