Alright, let's work through 6377 times 3309 step by step
6377 × 3309 = 3309 × (6377)
+ 3309 × 7 which equals 23163
+ 3309 × 70 producing 231630
+ 3309 × 300 what gives us 992700
+ 3309 × 6000 producing 19854000

= 21101493
