Alright, let's work through 6357 times 3293 step by step
6357 × 3293 = 3293 × (6357)
+ 3293 × 7 that is equal 23051
+ 3293 × 50 yielding 164650
+ 3293 × 300 what gives us 987900
+ 3293 × 6000 producing 19758000

= 20933601
