Alright, let's work through 89619279 times 61976998 step by step
89619279 × 61976998 = 61976998 × (89619279)
+ 61976998 × 9 that is equal 557792982
+ 61976998 × 70 resulting in 4338389860
+ 61976998 × 200 which equals 12395399600
+ 61976998 × 9000 giving us 557792982000
+ 61976998 × 10000 that results in 619769980000
+ 61976998 × 600000 resulting in 37186198800000
+ 61976998 × 9000000 which equals 557792982000000
+ 61976998 × 80000000 yielding 4958159840000000

= 5554333875344442
