Alright, let's work through 80897696 times 85199621 step by step
80897696 × 85199621 = 85199621 × (80897696)
+ 85199621 × 6 which equals 511197726
+ 85199621 × 90 which equals 7667965890
+ 85199621 × 600 giving us 51119772600
+ 85199621 × 7000 that is equal 596397347000
+ 85199621 × 90000 that results in 7667965890000
+ 85199621 × 800000 giving us 68159696800000
+ 85199621 × 0000000 what gives us 0
+ 85199621 × 80000000 that equals 6815969680000000

= 6892453038973216
