Alright, let's work through 85456849 times 8342690 step by step
85456849 × 8342690 = 8342690 × (85456849)
+ 8342690 × 9 resulting in 75084210
+ 8342690 × 40 that equals 333707600
+ 8342690 × 800 giving us 6674152000
+ 8342690 × 6000 that equals 50056140000
+ 8342690 × 50000 that equals 417134500000
+ 8342690 × 400000 that equals 3337076000000
+ 8342690 × 5000000 that equals 41713450000000
+ 8342690 × 80000000 that results in 667415200000000

= 712939999583810
