Alright, let's work through 6921 times 7964 step by step
6921 × 7964 = 7964 × (6921)
+ 7964 × 1 that results in 7964
+ 7964 × 20 which equals 159280
+ 7964 × 900 producing 7167600
+ 7964 × 6000 yielding 47784000

= 55118844
