Alright, let's work through 6429 times 3237 step by step
6429 × 3237 = 3237 × (6429)
+ 3237 × 9 resulting in 29133
+ 3237 × 20 producing 64740
+ 3237 × 400 yielding 1294800
+ 3237 × 6000 giving us 19422000

= 20810673
