Alright, let's work through 4220 times 6830 step by step
4220 × 6830 = 6830 × (4220)
+ 6830 × 0 which equals 0
+ 6830 × 20 that equals 136600
+ 6830 × 200 that is equal 1366000
+ 6830 × 4000 what gives us 27320000

= 28822600
