Alright, let's work through 89949994 times 62398259 step by step
89949994 × 62398259 = 62398259 × (89949994)
+ 62398259 × 4 giving us 249593036
+ 62398259 × 90 resulting in 5615843310
+ 62398259 × 900 resulting in 56158433100
+ 62398259 × 9000 giving us 561584331000
+ 62398259 × 40000 what gives us 2495930360000
+ 62398259 × 900000 that is equal 56158433100000
+ 62398259 × 9000000 producing 561584331000000
+ 62398259 × 80000000 producing 4991860720000000

= 5612723022660446
