Alright, let's work through 4789 times 812 step by step
4789 × 812 = 812 × (4789)
+ 812 × 9 that results in 7308
+ 812 × 80 that is equal 64960
+ 812 × 700 what gives us 568400
+ 812 × 4000 producing 3248000

= 3888668
