Alright, let's work through 3484 times 840 step by step
3484 × 840 = 840 × (3484)
+ 840 × 4 resulting in 3360
+ 840 × 80 what gives us 67200
+ 840 × 400 what gives us 336000
+ 840 × 3000 which equals 2520000

= 2926560
