Alright, let's work through 1340 times 7921 step by step
1340 × 7921 = 7921 × (1340)
+ 7921 × 0 what gives us 0
+ 7921 × 40 yielding 316840
+ 7921 × 300 resulting in 2376300
+ 7921 × 1000 resulting in 7921000

= 10614140
