Alright, let's work through 6921 times 9109 step by step
6921 × 9109 = 9109 × (6921)
+ 9109 × 1 that results in 9109
+ 9109 × 20 giving us 182180
+ 9109 × 900 resulting in 8198100
+ 9109 × 6000 producing 54654000

= 63043389
