Alright, let's work through 47230815 times 72136649 step by step
47230815 × 72136649 = 72136649 × (47230815)
+ 72136649 × 5 producing 360683245
+ 72136649 × 10 that is equal 721366490
+ 72136649 × 800 yielding 57709319200
+ 72136649 × 0000 which equals 0
+ 72136649 × 30000 which equals 2164099470000
+ 72136649 × 200000 producing 14427329800000
+ 72136649 × 7000000 producing 504956543000000
+ 72136649 × 40000000 producing 2885465960000000

= 3407072723638935
