Alright, let's work through 5821 times 3907 step by step
5821 × 3907 = 3907 × (5821)
+ 3907 × 1 yielding 3907
+ 3907 × 20 producing 78140
+ 3907 × 800 what gives us 3125600
+ 3907 × 5000 yielding 19535000

= 22742647
