Alright, let's work through 6459 times 3642 step by step
6459 × 3642 = 3642 × (6459)
+ 3642 × 9 that equals 32778
+ 3642 × 50 yielding 182100
+ 3642 × 400 yielding 1456800
+ 3642 × 6000 producing 21852000

= 23523678
