Alright, let's work through 3827 times 139 step by step
3827 × 139 = 139 × (3827)
+ 139 × 7 giving us 973
+ 139 × 20 what gives us 2780
+ 139 × 800 producing 111200
+ 139 × 3000 that results in 417000

= 531953
