Alright, let's work through 6921 times 1031 step by step
6921 × 1031 = 1031 × (6921)
+ 1031 × 1 producing 1031
+ 1031 × 20 that is equal 20620
+ 1031 × 900 resulting in 927900
+ 1031 × 6000 resulting in 6186000

= 7135551
