Alright, let's work through 2999 times 5263 step by step
2999 × 5263 = 5263 × (2999)
+ 5263 × 9 resulting in 47367
+ 5263 × 90 giving us 473670
+ 5263 × 900 which equals 4736700
+ 5263 × 2000 yielding 10526000

= 15783737
