Alright, let's work through 4220 times 6981 step by step
4220 × 6981 = 6981 × (4220)
+ 6981 × 0 producing 0
+ 6981 × 20 giving us 139620
+ 6981 × 200 yielding 1396200
+ 6981 × 4000 producing 27924000

= 29459820
