Alright, let's work through 3956 times 5348 step by step
3956 × 5348 = 5348 × (3956)
+ 5348 × 6 resulting in 32088
+ 5348 × 50 yielding 267400
+ 5348 × 900 that results in 4813200
+ 5348 × 3000 producing 16044000

= 21156688
