We're going to solve 5851 multiplied by 8457
5851 × 8457 = 8457 × (5851)
+ 8457 × 1 that is equal 8457
+ 8457 × 50 producing 422850
+ 8457 × 800 resulting in 6765600
+ 8457 × 5000 which equals 42285000

= 49481907
