Alright, let's work through 5821 times 6309 step by step
5821 × 6309 = 6309 × (5821)
+ 6309 × 1 producing 6309
+ 6309 × 20 that equals 126180
+ 6309 × 800 giving us 5047200
+ 6309 × 5000 yielding 31545000

= 36724689
