Alright, let's work through 4323 times 6620 step by step
4323 × 6620 = 6620 × (4323)
+ 6620 × 3 resulting in 19860
+ 6620 × 20 giving us 132400
+ 6620 × 300 giving us 1986000
+ 6620 × 4000 producing 26480000

= 28618260
