Alright, let's work through 84455323 times 47437263 step by step
84455323 × 47437263 = 47437263 × (84455323)
+ 47437263 × 3 what gives us 142311789
+ 47437263 × 20 producing 948745260
+ 47437263 × 300 that equals 14231178900
+ 47437263 × 5000 that equals 237186315000
+ 47437263 × 50000 resulting in 2371863150000
+ 47437263 × 400000 producing 18974905200000
+ 47437263 × 4000000 resulting in 189749052000000
+ 47437263 × 80000000 that is equal 3794981040000000

= 4006329368900949
