Alright, let's work through 4287 times 3148 step by step
4287 × 3148 = 3148 × (4287)
+ 3148 × 7 resulting in 22036
+ 3148 × 80 that equals 251840
+ 3148 × 200 that equals 629600
+ 3148 × 4000 yielding 12592000

= 13495476
