Alright, let's work through 84919740 times 66833247 step by step
84919740 × 66833247 = 66833247 × (84919740)
+ 66833247 × 0 producing 0
+ 66833247 × 40 yielding 2673329880
+ 66833247 × 700 producing 46783272900
+ 66833247 × 9000 yielding 601499223000
+ 66833247 × 10000 giving us 668332470000
+ 66833247 × 900000 that equals 60149922300000
+ 66833247 × 4000000 which equals 267332988000000
+ 66833247 × 80000000 that is equal 5346659760000000

= 5675461958595780
