Alright, let's work through 8721 times 4140 step by step
8721 × 4140 = 4140 × (8721)
+ 4140 × 1 which equals 4140
+ 4140 × 20 which equals 82800
+ 4140 × 700 that is equal 2898000
+ 4140 × 8000 producing 33120000

= 36104940
