Alright, let's work through 6891 times 5307 step by step
6891 × 5307 = 5307 × (6891)
+ 5307 × 1 giving us 5307
+ 5307 × 90 producing 477630
+ 5307 × 800 yielding 4245600
+ 5307 × 6000 resulting in 31842000

= 36570537
