Alright, let's work through 84187955 times 39818845 step by step
84187955 × 39818845 = 39818845 × (84187955)
+ 39818845 × 5 which equals 199094225
+ 39818845 × 50 that equals 1990942250
+ 39818845 × 900 resulting in 35836960500
+ 39818845 × 7000 resulting in 278731915000
+ 39818845 × 80000 producing 3185507600000
+ 39818845 × 100000 that results in 3981884500000
+ 39818845 × 4000000 what gives us 159275380000000
+ 39818845 × 80000000 yielding 3185507600000000

= 3352267131011975
