Alright, let's work through 3724 times 2169 step by step
3724 × 2169 = 2169 × (3724)
+ 2169 × 4 that equals 8676
+ 2169 × 20 that equals 43380
+ 2169 × 700 producing 1518300
+ 2169 × 3000 which equals 6507000

= 8077356
