Alright, let's work through 84029959 times 47593270 step by step
84029959 × 47593270 = 47593270 × (84029959)
+ 47593270 × 9 that results in 428339430
+ 47593270 × 50 yielding 2379663500
+ 47593270 × 900 yielding 42833943000
+ 47593270 × 9000 what gives us 428339430000
+ 47593270 × 20000 producing 951865400000
+ 47593270 × 000000 producing 0
+ 47593270 × 4000000 yielding 190373080000000
+ 47593270 × 80000000 producing 3807461600000000

= 3999260526775930
