Alright, let's work through 8749 times 1399 step by step
8749 × 1399 = 1399 × (8749)
+ 1399 × 9 that results in 12591
+ 1399 × 40 which equals 55960
+ 1399 × 700 that equals 979300
+ 1399 × 8000 yielding 11192000

= 12239851
