Alright, let's work through 4383 times 3507 step by step
4383 × 3507 = 3507 × (4383)
+ 3507 × 3 resulting in 10521
+ 3507 × 80 resulting in 280560
+ 3507 × 300 resulting in 1052100
+ 3507 × 4000 which equals 14028000

= 15371181
