Alright, let's work through 85521091 times 99457322 step by step
85521091 × 99457322 = 99457322 × (85521091)
+ 99457322 × 1 producing 99457322
+ 99457322 × 90 that results in 8951158980
+ 99457322 × 000 resulting in 0
+ 99457322 × 1000 that results in 99457322000
+ 99457322 × 20000 that results in 1989146440000
+ 99457322 × 500000 resulting in 49728661000000
+ 99457322 × 5000000 producing 497286610000000
+ 99457322 × 80000000 which equals 7956585760000000

= 8505698685378302
