Alright, let's work through 3867 times 5286 step by step
3867 × 5286 = 5286 × (3867)
+ 5286 × 7 resulting in 37002
+ 5286 × 60 what gives us 317160
+ 5286 × 800 which equals 4228800
+ 5286 × 3000 that is equal 15858000

= 20440962
