Alright, let's work through 8257 times 9850 step by step
8257 × 9850 = 9850 × (8257)
+ 9850 × 7 which equals 68950
+ 9850 × 50 giving us 492500
+ 9850 × 200 giving us 1970000
+ 9850 × 8000 resulting in 78800000

= 81331450
