Alright, let's work through 6421 times 7570 step by step
6421 × 7570 = 7570 × (6421)
+ 7570 × 1 that equals 7570
+ 7570 × 20 resulting in 151400
+ 7570 × 400 producing 3028000
+ 7570 × 6000 which equals 45420000

= 48606970
