Alright, let's work through 84483642 times 39210823 step by step
84483642 × 39210823 = 39210823 × (84483642)
+ 39210823 × 2 what gives us 78421646
+ 39210823 × 40 what gives us 1568432920
+ 39210823 × 600 what gives us 23526493800
+ 39210823 × 3000 which equals 117632469000
+ 39210823 × 80000 resulting in 3136865840000
+ 39210823 × 400000 that results in 15684329200000
+ 39210823 × 4000000 that equals 156843292000000
+ 39210823 × 80000000 producing 3136865840000000

= 3312673132857366
