Alright, let's work through 8646 times 3921 step by step
8646 × 3921 = 3921 × (8646)
+ 3921 × 6 giving us 23526
+ 3921 × 40 that is equal 156840
+ 3921 × 600 producing 2352600
+ 3921 × 8000 that is equal 31368000

= 33900966
