Alright, let's work through 80234395 times 84456573 step by step
80234395 × 84456573 = 84456573 × (80234395)
+ 84456573 × 5 that equals 422282865
+ 84456573 × 90 resulting in 7601091570
+ 84456573 × 300 what gives us 25336971900
+ 84456573 × 4000 that equals 337826292000
+ 84456573 × 30000 that results in 2533697190000
+ 84456573 × 200000 which equals 16891314600000
+ 84456573 × 0000000 that is equal 0
+ 84456573 × 80000000 that equals 6756525840000000

= 6776322038428335
