Alright, let's work through 83334792 times 64726383 step by step
83334792 × 64726383 = 64726383 × (83334792)
+ 64726383 × 2 that is equal 129452766
+ 64726383 × 90 that results in 5825374470
+ 64726383 × 700 producing 45308468100
+ 64726383 × 4000 giving us 258905532000
+ 64726383 × 30000 which equals 1941791490000
+ 64726383 × 300000 producing 19417914900000
+ 64726383 × 3000000 what gives us 194179149000000
+ 64726383 × 80000000 what gives us 5178110640000000

= 5393959664217336
