Alright, let's work through 80916469 times 54589801 step by step
80916469 × 54589801 = 54589801 × (80916469)
+ 54589801 × 9 that equals 491308209
+ 54589801 × 60 that results in 3275388060
+ 54589801 × 400 that results in 21835920400
+ 54589801 × 6000 resulting in 327538806000
+ 54589801 × 10000 yielding 545898010000
+ 54589801 × 900000 that is equal 49130820900000
+ 54589801 × 0000000 what gives us 0
+ 54589801 × 80000000 giving us 4367184080000000

= 4417213940332669
