Alright, let's work through 85791991 times 66230022 step by step
85791991 × 66230022 = 66230022 × (85791991)
+ 66230022 × 1 that results in 66230022
+ 66230022 × 90 producing 5960701980
+ 66230022 × 900 that equals 59607019800
+ 66230022 × 1000 that results in 66230022000
+ 66230022 × 90000 resulting in 5960701980000
+ 66230022 × 700000 that equals 46361015400000
+ 66230022 × 5000000 that equals 331150110000000
+ 66230022 × 80000000 that is equal 5298401760000000

= 5682005451353802
