Alright, let's work through 1964 times 6809 step by step
1964 × 6809 = 6809 × (1964)
+ 6809 × 4 yielding 27236
+ 6809 × 60 that is equal 408540
+ 6809 × 900 that is equal 6128100
+ 6809 × 1000 which equals 6809000

= 13372876
