Alright, let's work through 80199199 times 43632091 step by step
80199199 × 43632091 = 43632091 × (80199199)
+ 43632091 × 9 producing 392688819
+ 43632091 × 90 that is equal 3926888190
+ 43632091 × 100 that results in 4363209100
+ 43632091 × 9000 that is equal 392688819000
+ 43632091 × 90000 giving us 3926888190000
+ 43632091 × 100000 which equals 4363209100000
+ 43632091 × 0000000 resulting in 0
+ 43632091 × 80000000 giving us 3490567280000000

= 3499258748895109
