Alright, let's work through 2540 times 5203 step by step
2540 × 5203 = 5203 × (2540)
+ 5203 × 0 that results in 0
+ 5203 × 40 which equals 208120
+ 5203 × 500 resulting in 2601500
+ 5203 × 2000 yielding 10406000

= 13215620
