Alright, let's work through 3384 times 6459 step by step
3384 × 6459 = 6459 × (3384)
+ 6459 × 4 resulting in 25836
+ 6459 × 80 what gives us 516720
+ 6459 × 300 that is equal 1937700
+ 6459 × 3000 yielding 19377000

= 21857256
