Alright, let's work through 82985846 times 74400021 step by step
82985846 × 74400021 = 74400021 × (82985846)
+ 74400021 × 6 what gives us 446400126
+ 74400021 × 40 resulting in 2976000840
+ 74400021 × 800 what gives us 59520016800
+ 74400021 × 5000 yielding 372000105000
+ 74400021 × 80000 resulting in 5952001680000
+ 74400021 × 900000 what gives us 66960018900000
+ 74400021 × 2000000 what gives us 148800042000000
+ 74400021 × 80000000 yielding 5952001680000000

= 6174148685102766
