Alright, let's work through 3373 times 6433 step by step
3373 × 6433 = 6433 × (3373)
+ 6433 × 3 producing 19299
+ 6433 × 70 producing 450310
+ 6433 × 300 resulting in 1929900
+ 6433 × 3000 that results in 19299000

= 21698509
