Alright, let's work through 89228392 times 80171973 step by step
89228392 × 80171973 = 80171973 × (89228392)
+ 80171973 × 2 producing 160343946
+ 80171973 × 90 resulting in 7215477570
+ 80171973 × 300 producing 24051591900
+ 80171973 × 8000 which equals 641375784000
+ 80171973 × 20000 giving us 1603439460000
+ 80171973 × 200000 what gives us 16034394600000
+ 80171973 × 9000000 yielding 721547757000000
+ 80171973 × 80000000 that is equal 6413757840000000

= 7153616234257416
