Alright, let's work through 4420 times 1145 step by step
4420 × 1145 = 1145 × (4420)
+ 1145 × 0 producing 0
+ 1145 × 20 what gives us 22900
+ 1145 × 400 which equals 458000
+ 1145 × 4000 yielding 4580000

= 5060900
