Alright, let's work through 4632 times 840 step by step
4632 × 840 = 840 × (4632)
+ 840 × 2 giving us 1680
+ 840 × 30 producing 25200
+ 840 × 600 producing 504000
+ 840 × 4000 giving us 3360000

= 3890880
