Alright, let's work through 89798710 times 67990998 step by step
89798710 × 67990998 = 67990998 × (89798710)
+ 67990998 × 0 yielding 0
+ 67990998 × 10 resulting in 679909980
+ 67990998 × 700 producing 47593698600
+ 67990998 × 8000 that results in 543927984000
+ 67990998 × 90000 that is equal 6119189820000
+ 67990998 × 700000 producing 47593698600000
+ 67990998 × 9000000 yielding 611918982000000
+ 67990998 × 80000000 producing 5439279840000000

= 6105503912012580
